Notes on The Study of Counterpoint from Gradus ad Parnassum (Fux; Alfred Mann translation)

Introduction

  • Text analyzed: The Study of Counterpoint from Johann Joseph Fux's Gradus ad Parnassum (Revised Edition) translated and edited by Alfred Mann with John Edmunds. Publication details: Norton Library, 1965 (original Latin 1725; Gradus ad Parnassum). Alfred Mann's translation presents the essence of Fux's teachings and situates them in the context of classical and later theory.

  • Significance of Gradus ad Parnassum:

    • Widely influential: Bach, Leopold Mozart, Haydn, Beethoven, and later composers (Mendelssohn, Hindemith) drew on it.

    • Described as a turning point in music theory; established a standard for counterpoint education.

    • The English translation (1943/1944) made the Latin text accessible to a broad audience; this edition extends the teaching with cross-references to Renaissance through 20th-century theory.

  • Author’s framing: The Foreword to the Reader and the Dialogue format

    • The Dialogic method frames a teacher (Aloysius) and a pupil (Josephus).

    • Focus on practical: gradual mastery through exercises; emphasizes pedagogy over abstract theory.

    • The Preface and Foreword stress the aim to provide a clear, doable method for learners who lack access to a teacher, and to maintain fidelity to performance realities.

  • Core method overview:

    • Cantus firmus (CF) as the fixed reference melody against which counterpoint is built.

    • Pedagogy proceeds from simple to complex: two voices (First Part), then three parts (Second Part), then four voices (Three Parts and Four Parts). Later, Florid Counterpoint combines features from all five species.

    • The goal is a singable, well-controlled melodic line, with an emphasis on voice-leading and harmonic sense within the rules of counterpoint.

The Dialogue: characters, purpose, and structure

  • Aloysius (the master) and Josephus (the pupil) engage in a didactic exchange about the rules, practices, and rationale of counterpoint.

  • The dialogue is organized to mirror a lesson plan:

    • Introduction to the nature of intervals and scales.

    • Two-part counterpoint: Note against Note (First Part).

    • The Second, Third, Fourth, and Fifth Species of counterpoint in two parts.

    • The Ligature (Fourth Species) and Florid Counterpoint (Five Species).

    • Then move to Three-Part Counterpoint (Second Part): Note against Note in three parts; Half Notes against Whole Notes; Quarters against Whole Notes; The Ligature; Florid Counterpoint.

    • The Five Species are then revisited and practiced in three parts, then extended to four voices with similar principles and many exceptions.

  • Terminology introduced in the dialogue:

    • Cantus firmus (CF): a given melodic line around which counterpoint is built.

    • Motus (motion): movement of voices; three types defined: Direct motion, Contrary motion, Oblique motion.

    • Consonances vs. Dissonances: intervals classified and treated with rules depending on motion and position.

    • Hexachords and Modes: Ut-Re-Mi-Fa-Sol-La (hard hexachord), Soft hexachord, Natural hexachord; Modes (Dorian, Mixolydian, Aeolian, etc.) and their final cadences.

    • Nota cambiata (cambiata): Cambiata, the “exchanged note” pattern used in later bars.

    • Battuta: cadence/progression terms such as battuta (notes grouped as a unit, e.g., octave battuta).

    • Ligature (syncopation): tying of notes across a beat to delay a consonance; used to create syncopation.

Fundamental historical and theoretical context

  • The student is reminded of the historical arc of counterpoint:

    • Discantus (two-part) → Counterpoint (multiple voices) evolved into a sophisticated theory with the Renaissance and Baroque developments.

    • Tinctoris (Flemish Renaissance) introduced a systematic approach to note against note and to cantus contra cantum, anticipating vertical/horizontal integration.

    • Zarlino expanded contrapuntal theory to treat counterpoint as relating points within the whole composition (contrapunti—pointing/telling the musical story).

    • Monteverdi’s “first practice” vs. “second practice” introduced the idea that newer practices might depart from rules yet still be valid within a broader aesthetic.

    • The Gradus ad Parnassum (Fux, 1725) reconciles past practice with contemporary musical practice, emphasizing a deliberate pedagogy based on the past (especially Palestrina) as a stable model for instruction.

  • The text highlights how Fux used Latin for wide distribution and how later translators and editors (e.g., Mizler, Denis) approached the text in various languages, with Mann’s English translation representing a faithful rendering from the original Latin.

  • The cultural and pedagogical aim: provide a practical learning method for students who lack teachers or resources, enabling gradual mastery and steady progress toward free composition.

Key concepts and terms (core definitions and relationships)

  • Cantus firmus (CF): fixed melody used as the basis for counterpoint; the other voice(s) are constructed in relation to CF.

  • Consonances vs. dissonances:

    • Consonances: the stable, harmonious intervals; in Fux’s system, perfect consonances include the Unison, Fifth, and Octave; imperfect consonances include the Third and Sixth.

    • Dissonances: the rest (Second, Fourth, Seventh, and some special intervals depending on context); treated carefully with rules for motion and preparation/resolution.

  • Interval ratios (harmony language): traditional ratios anchor the understanding of consonances:

    • Octave: 2:12:1

    • Fifth: 3:23:2

    • Major third: 5:45:4

    • Minor third: 6:56:5

    • Tritone (augmented fourth): a dissonant interval; historically avoided in strict counterpoint but considered in ligatures and certain exceptions.

  • Modes and hexachords:

    • Hexachords: hard (durum), soft (molle), and natural (naturale) hexachords; historical naming relates to scale syllables ut, re, mi, fa, sol, la.

    • Finales and mode structure connect to cantus firmus usage and cadential formulas.

  • Directional motion terminology:

    • Direct motion: two or more voices move in the same direction by step or leap.

    • Contrary motion: voices move in opposite directions.

    • Oblique motion: one voice remains stationary (or nearly stationary) while the other moves.

    • Arsis and Thesis: Greek terms used to denote upbeat (arsis) and downbeat (thesis) in a binary meter (two half-notes per measure).

  • The harmonic triad (three-note chord) concept as a guiding structural unit in three-part and four-part counterpoint.

  • Cambiata (nota cambiata): a changing note pattern where a note is displaced by a step or skip to a dissonant note that resolves by step to a consonance.

  • Cadences and cadential rules: decisions about how to end phrases and chords in various modes; often require avoiding certain dissonances at the end and choosing appropriate final intervals.

  • Voice-leading and spacing: in multi-voice textures, care must be taken to avoid overly close spacing or crossing; in particular, the text emphasizes distinguishing adjacent intervals (unison, octave, tenth) and the importance of the “natural order” of consonances when distributing parts.

  • Ligatures (syncopations): ties across a beat that delay the following note; the ligature is a device to create rhythmic variety without changing the underlying consonant structure; they require careful resolution of the dissonances that occur on the upbeat.

  • The concept of “the harmonic triad” as a guiding harmonic reference in three-voice writing; in some circumstances, triads may be replaced by a 6th, octave, or other consonances to preserve melodic line and voice-leading.

The First Part: Note Against Note (Two-Part Counterpoint)

  • Setup and scope:

    • Two voices against a cantus firmus in the alto or tenor; the cantus firmus is treated as the baseline (cantus firmus in a fixed clef; counterpoint in the other clef).

    • The exercise begins with “note against note”: each note in counterpoint must land on a consonance in the cantus firmus; the duration of notes is not critical so long as they align with whole-note values in the example, but the book typically demonstrates with whole notes.

  • Core rules (summary, to be applied in practice):

    • No augmented, diminished, or chromatic intervals; no intervals larger than a fifth except octave and minor sixth (the minor sixth should be used only upward).

    • No leaps or skips that are not compensated later; avoid skipped intervals that create inappropriate ranges (registers too high or too low).

    • Begin and end on perfect consonances (to express “perfection” and “relaxation”).

    • Use all three motions (direct, contrary, oblique) to connect consonances; oblique motion can be used to stabilize a voice while the other moves.

    • Imperfect consonances are generally more harmonious than perfect ones; begin and end with perfect consonances, and ensure proper preparation and resolution.

  • Step-by-step learning path (as demonstrated in the text):

    • Start with a cantus firmus in a given mode; construct a counterpoint above it, using the soprano clef.

    • The pupil creates the first exercise in a given mode (e.g., starting with a fifth as the first consonance).

    • Use oblique motion from the first to second bar when possible; progress from bar to bar to form a complete line.

    • The teacher notes and corrects mistakes by pointing out mode inconsistencies, such as starting on a pitch that misaligns with the cantus firmus mode (and rectifies by moving the initial fifth to an octave to establish the mode).

    • The pupil learns to count bars and use the numerical bar labeling (1, 2, 3, …) to demonstrate the sequence of movements and progressions.

  • Common mistakes and corrections illustrated in the dialogue:

    • Misalignment with cantus firmus mode: corrected by adjusting the cantus to the proper mode (e.g., changing the opening interval to ensure the cantus firmus mode is preserved).

    • Direct motion from imperfect consonance to perfect consonance is often corrected by switching to contrary motion (e.g., moving from a third to a fifth).

    • The importance of avoiding parallel perfect consonances (two perfect consonances in successive chords).

    • The need to resolve dissonances stepwise to a consonance on the following downbeat, especially with ligatures.

  • Notable examples and concepts mentioned in the First Part:

    • The use of the five types of motion (direct, contrary, oblique) and four progression rules to map the proper sequence of consonances.

    • The necessity of keeping the cantus firmus in the same mode as the counterpoint or adjusting to the mode to maintain modal coherence.

    • The practice of resolving missteps by switching the direction of motion (e.g., from direct to contrary) and using oblique motion to avoid errors.

The Second Species: Half Notes against Whole Notes in Two Parts

  • Concept and metrical structure:

    • Binary meter: two equal parts per measure (downbeat and upbeat).

    • The counterpoint uses two half notes against each whole note of the cantus firmus.

    • The first half-note (on the downbeat) must be consonant; the second (on the upbeat) is dissonant only if it moves stepwise from the preceding note (if it moves by a skip, it must be consonant).

  • Diminution and filling the space:

    • Diminution (filling the interval) allows a dissonant upbeat to be filled by stepwise motion; the space between two non-adjacent tones (usually a third apart) may be filled.

  • Important rules and concepts:

    • The surface cadence: the next to last bar must resolve with a major sixth (if CF in the lower voice) or minor third (if CF in the upper voice).

    • The cantus firmus may appear in upper, middle, or lower voices to study how the counterpoint behaves with different voice-leading scenarios.

    • The continuation must maintain the mode and avoid the mi–fa (tritone) gap; the tritone is avoided or handled with caution as a special case.

  • Common issues and corrections:

    • Avoiding the diatonic tritone progression (mi–fa) on the downbeat when in direct motion leads to dissonant consequences; corrections involve changing the melodic line or employing a ligature to delay the dissonant note until a more comfortable position.

    • The minuteness of the dissonance: dissonances must be resolved to the following consonance; ligatures may delay the resolution as long as the melodic line remains singable.

  • Examples and awareness:

    • The text provides models (figures 120–123 and beyond) to illustrate when ligatures are necessary and how to resolve dissonances while maintaining harmonic integrity.

    • In some contexts, two half notes may be parallel to a fifth in three-part counterpoint if doing so supports the harmonic triad; this is a controlled exception to two-part rules, not a general allowance.

  • Thematic ideas:

    • The importance of voice-leading and harmonious line construction remains central; the triad remains a guiding structural unit, and the balance between melodic fluency and harmonic coherence is emphasized.

The Third Species: Four Quarters against a Whole Note

  • Core idea:

    • Four quarter notes against a single whole note; the third and fourth notes may be dissonant depending on the preceding note and progression.

  • Special patterns and exceptions:

    • The third note in the sequence is typically dissonant in this species and is often described as a diminution of the third skip.

    • The cambiata (nota cambiata) is introduced as a pattern where the second note is replaced by a non-identical pitch that resolves to a consonance on the next beat.

    • The second dissonant note can be approached by a step or by a skip depending on musical necessity; the Cambiata is used to manage melodic flow and avoid awkward leaps.

  • Ending cadences and mode considerations:

    • Endings require careful consideration of the mode and the type of cadence appropriate to the final chord; sometimes a major third is used in the final chord when a perfect fifth cannot be used without producing an awkward parallel or voice-leading issue.

  • Voice-leading realities:

    • The need to consider the cantus firmus in any voice (upper, middle, lower) and to ensure lines remain singable while respecting the harmonic triad.

  • Notable ideas:

    • The fifths and octaves are still to be avoided in parallel motion; however, in certain contexts, a mezzo-soprano or tenor line may temporarily depart from strict rules to avoid melodic dead-ends, especially when the cantus firmus restricts motion.

  • Examples and exercises:

    • The text includes examples (Figs. 49–56 and beyond) illustrating how the duty to maintain consonances and the avoidance of dissonances interacts with cambiata and the tetrachordal framework. The pupil practices exercises with CF in different voices to learn the correct patterns.

The Fourth Species: The Ligature (Syncopation)

  • Core concept:

    • Two half notes are tied (ligature) across a beat: one on the upbeat and one on the downbeat.

    • The ligature can be consonant (both tied notes consonant) or dissonant (upbeat consonant, downbeat dissonant).

  • Consonant ligatures:

    • Both tied notes are consonant; this maintains a continuous harmonic structure while introducing rhythmic variety.

  • Dissonant ligatures:

    • The upbeat note must be consonant; the downbeat note is dissonant and resolves to a consonance on the following beat.

    • Dissonant ligatures must be resolved stepwise to a consonance in the following measure.

  • Resolution of dissonances:

    • Dissonances must resolve by step to a consonance on the downbeat of the next measure, and the specific resolution depends on the voice and the interval involved (e.g., a second resolves to a unison, a fourth to a third, a seventh to a sixth, a ninth to a tenth).

    • The retardation (notes held over) is treated as a delaying device, and the dissonance resolves when the retardation is removed.

  • Practical considerations:

    • In some cases, a ligature cannot be employed every measure; elsewhere, ligatures are used in every measure when possible.

    • When ligatures involve a seventh with a fifth or other problematic intervals, careful division of the sustained whole note may be necessary to preserve harmonic integrity.

  • Theoretical notes:

    • The ligature does not change the essential nature of consonances; it delays the following note to create a rhythmic-thematic effect without altering the underlying harmonic logic.

  • Examples and guidance:

    • Figures 61–82 illustrate both consonant and dissonant ligatures and their resolutions. The teacher discusses why some ligatures are allowed in the upper vs. lower registers and the necessity of maintaining singable lines.

    • The text emphasizes that ligatures must be used wherever possible, but practical limitations may require rests or alternative strategies when ligatures cannot be employed.

The Fifth Species: Florid Counterpoint

  • Concept:

    • Florid Counterpoint is a culmination that combines all five species into a single, rich, and varied melodic fabric.

    • The goal is a singable and lively melodic line that integrates all previous techniques.

  • Practical approach:

    • The fourth voice (in four-part writing) remains in whole notes, while the other voices continue with the various values (half, quarter, etc.) consistent with the other species.

    • The exercise emphasizes combining half notes, quarters, and ligatures to create a richly textured line that remains harmonically coherent with the cantus firmus.

  • Pedagogical emphasis:

    • The teacher urges repeated practice and suggests that mastering Florid Counterpoint requires substantial time and effort, as the student must learn to weave all techniques into an elegant whole.

  • Advice and closing thoughts:

    • The master stresses that significant practice over several years, including the discipline of writing regularly and learning to manage melodic lines within a four-voice context, is essential to reach the level of mastery implied by Florid Counterpoint.

  • Final notes:

    • The master hints at extending the study to more than four voices, while acknowledging health limits; the underlying principle remains: the complexity grows, but the rules guiding voice-leading still inform practice.

The Second Part: Note Against Note in Three Parts

  • Core assertion:

    • Three-part counterpoint is the most complete: three voices can form a full harmonic triad in each measure without adding another voice.

  • General approach:

    • Begin with the simplest three-part, note-against-note counterpoint (equal notes in each part).

    • The harmonic triad (the combination of the third and fifth) should be present in each measure when possible.

  • Alternatives and pragmatic allowances:

    • Sometimes a third or sixth may replace the triad to achieve a more natural melodic line or to avoid awkward voice-leading; in such cases, the triad role is approximated by chordal notes that maintain harmonic coherence.

    • The order of parts and the distribution of consonances must preserve the natural triadic order while maintaining good voice-leading, avoiding parallel perfect consonances, and maintaining singability.

  • The natural order of consonances (the harmonic division of the octave) is emphasized:

    • The fifth appears first via harmonic division of the octave; the octave follows; and the third (or tenth) arises from further division of the fifth.

    • The emphasis is on the natural order: fifth → octave → third (or tenth).

  • Cadences and cadential concerns in three parts:

    • Endings require careful selection of the final chord: sometimes an ordinary cadence is not possible due to cantus firmus placement or modal constraints; a major or minor third may be used in the final chord if an ordinary perfect fifth cadence is not feasible.

  • Practice and discipline:

    • Three-part writing demands careful attention to be able to follow the rule set; the exercises show how to adjust the lines to accommodate modal and harmonic realities while maintaining the triadic basis.

The Three-Part and Four-Part Exercises: Part II and Beyond

  • Three-part note against note (Chapter One):

    • The three-voice setup explores the harmonic triad across measures with fixed cantus firmus positions across the three voices.

    • The exercises include alternatives and variants where triads are replaced by sixths or octaves to maintain melodic line quality.

  • Half notes against whole notes (Chapter Two):

    • The extension of the harmonic triad principle to three voices with half notes against whole notes and the corresponding treatment of ligatures and dissonances.

  • Quarters against Whole Notes (Chapter Three):

    • More complex three-voice writing: the quarters in one voice against whole notes in the others, the need for careful voice-leading and management of consonances.

  • The Ligature (Chapter Four):

    • The ligature continues to be essential in three-voice writing; the rules for consonant and dissonant ligatures apply similarly, with attention to the added complexity of a third voice.

  • Florid Counterpoint (Chapter Five):

    • Combines elements of two-, three-, and four-voice counterpoint into a rich texture; emphasizes variability and melodic line quality.

  • Endings and limitations:

    • The author acknowledges the limits of the cantus firmus in strictly enforcing rules in all cases; the student is encouraged to practice, repeat, and gradually gain mastery for free composition.

The Four-Part Writing: Extending to four voices

  • Core idea:

    • A complete harmonic triad is contained within three voices; the fourth voice doubles an existing consonance (usually a third, fifth, or octave) unless a dissonant chord requires a different doubling.

  • Doubling strategies and exceptions:

    • Doubling the third or the fifth; in many cases the octave cannot be used due to problematic motion, so doubling the third or the sixth becomes necessary.

    • When the octave would lead to awkward voice-leading or a prohibited progression, alternatives such as doubling the third or shifting a voice to maintain proper motion are employed.

  • The rule of voice-leading across four voices:

    • The progression between any pair of voices must be considered in the context of all voices; the bass and inner voices must cohere with the soprano line to avoid hidden fifths and octaves and to maintain the harmonic integrity of the full chord.

    • The natural order of consonances (fifth, octave, third) remains a guiding principle in the arrangement of consonances within the four-voice texture.

  • Cadences and endings in four parts:

    • Cadential structure must account for four-part sonority; the final chord should reflect the harmonic triad and voice-leading rules, avoiding awkward leaps or unresolved dissonances.

  • Pedagogical note:

    • The author emphasizes that the four-part exercise is a culminating step in strict counterpoint, showing how all prior rules cohere in a more complex texture; the student should expect some compromises in the strict sense due to cantus firmus constraints and the necessity of maintaining singable lines.

The Ligature across four parts

  • The role of ligatures in four-part writing remains consistent with earlier chapters: delaying notes to create syncopation while preserving harmonic structure.

  • Consonances used with ligatures: the same consonances are used as if the ligature were removed; the added tension is produced by the rhythm rather than a fundamental change in the note content.

  • Special cases:

    • Ligatures may be used to manage critical intervals such as seventh with fifth or other dissonant configurations; sometimes division of a whole note becomes necessary to preserve harmonic integrity.

  • The practical aim:

    • Ligatures are a key resource for musical architecture in four-part counterpoint; the examples underscore their value in shaping melodic lines and rhythmic variety without violating the underpinning harmonic rules.

Florid Counterpoint (cross-species synthesis)

  • Summary:

    • Florid Counterpoint in four voices fuses all prior species into a single, richly textured style.

    • The fourth voice remains in whole notes while other voices use the various rhythmic values, integrating ligatures, note values, and melodic contour into a coherent texture.

  • Instructional emphasis:

    • The teacher encourages combining the five species with the cantus firmus to develop the ability to weave different types of motion and note values into one musical line without sacrificing harmonic coherence.

  • Pedagogical objective:

    • The author urges a long-term commitment to practice, suggesting that mastery requires years of disciplined study, with the goal of eventual freedom in composition beyond strict cantus firmus constraints.

  • Final notes:

    • The author expresses a desire to extend the study to more than four voices, but health concerns ultimately lead to a practical conclusion: four-part counterpoint is a robust and comprehensive basis for understanding counterpoint, and the path to more voices is built upon the same principles, with even less rigidity.

Appendix, notes, and index (summary of the scholarly apparatus)

  • Footnotes and appendices:

    • Footnotes for Pages 20 and 111 provide technical elaborations on harmonic and arithmetical divisions, the concept of prima nota, and historical terms.

    • Appendix includes explanations of historical terms (e.g., harmonic division, nota cambiata), and clarifications on the old mensural notation and the interpretation of certain terms (cantus firmus, battuta, etc.).

  • Bibliography (selected):

    • A wide range of Renaissance and Baroque sources, including Tinctoris, Zarlino, Martini, Monteverdi, Palestrina, Rameau, Beethoven, Haydn, Mozart, Brahms, and Hindemith, as well as modern scholarly publishers and editions of Gradus ad Parnassum.

Formulas and key numerical references (LaTeX)

  • Intervals and harmonic ratios:

    • Octave: 2:12:1

    • Fifth: 3:23:2

    • Major third: rac54rac{5}{4}

    • Minor third: rac65rac{6}{5}

  • Dissonances and resonance rules (conceptual):

    • A dissonance must resolve by step to a consonance on the next downbeat: if the dissonance is a fourth (or second, seventh, ninth, etc.), the resolution follows the corresponding consonance on the downbeat after the resolution of treaties in the retardation model.

  • The tritone (augmented fourth) position:

    • The interval often called “mi against fa” in the modal system is the tritone; it is typically avoided in strict counterpoint, and when used, it is handled with care in the course of a ligature or a cambiata.

  • Modes and scale steps (example):

    • Dorian mode: starting on D (D–E–F–G–A–B–C–D)

    • Mixolydian mode: starting on G (G–A–B–C–D–E–F–G)

    • Aeolian mode: starting on A (A–B–C–D–E–F–G–A)

    • The steps between scale degrees are guided by the hexachords and by the rules about how to proceed in each mode.

Ethical, philosophical, and practical implications

  • Ethical/practical implications:

    • The Gradus ad Parnassum is presented as a path to mastery through disciplined practice; it frames musical education as a long-term, craft-centered pursuit rather than a quick, novelty-driven activity.

    • The text acknowledges the inevitability of “departures from the proper manner” in real practice and emphasizes patience and gradual improvement, reflecting a pedagogical philosophy that values learning through gradual mastery.

  • Philosophical perspective:

    • The treatise frames counterpoint as the discipline that connects past musical traditions with modern practice, balancing fidelity to canonical models (e.g., Palestrina and the Renaissance tradition) with the evolving understanding of harmony and independent voices (Monteverdi, Rameau).

    • The dialogue form itself models a pedagogy that values dialogue, inquiry, and correction as essential components of learning.

  • Real-world relevance:

    • The Gradus ad Parnassum remains a reference work for composers and theorists studying the historical development of contrapuntal technique; the translation by Mann and the subsequent scholarship have kept its teaching approach relevant to modern students and practitioners.

Summary and takeaways

  • Fux’s Gradus ad Parnassum establishes a comprehensive, methodical approach to counterpoint by combining historical models with a practical, step-by-step pedagogy.

  • The study proceeds from two-voice to three-voice to four-voice counterpoint, and culminates in Florid Counterpoint, which synthesizes the techniques into a flexible, expressive practice.

  • The core of the method emphasizes voice-leading, modal coherence, and the balance between melodic fluency and harmonic propriety, anchored by the cantus firmus and the harmonic triad as guiding structures.

  • The Four Species (Note Against Note, Half Notes Against Whole Notes, Quarters Against Whole Notes, Ligature) build progressively: the learner masters consonances, dissonances, and their resolutions in increasingly complex textures.

  • The Fifth Species (Florid Counterpoint) integrates all prior tools for a rich, varied musical texture.

  • The Second Part (Three Parts) and subsequent chapters extend these ideas into triadic harmony and four-part writing, highlighting the role of the cantus firmus, the natural order of consonances, and the practicalities of complex voice-leading.

Title for the notes

Notes on The Study of Counterpoint from Gradus ad Parnassum (Alfred Mann translation; J. J. Fux)