Major Scales and Key Signatures Study Notes

Chapter Five: Major Scales and Key Signatures

Introduction to Major Scales

  • The discussion begins with inquiry into students' practice with major scales since the previous session on Monday.
    • Students are guided to write out two specific major scales: G and F.
  • Students are given two options for writing these scales: using staff paper for notation or simply writing the letter names on regular paper.

Construction of Major Scales

  • The major scale formula is introduced:

    • Formula: 2 whole steps, 1 half step followed by 3 whole steps and 1 half step.
    • This gives the pattern needed to create a major scale.

  • **G Major Scale:

    • Progression:**
    • A whole step from G to A (2 keys up) [G
      ightarrow A]
    • A whole step from A to B (2 keys up) [A
      ightarrow B]
    • A half step from B to C (1 key up) [B
      ightarrow C]
    • A whole step from C to D (2 keys up) [C
      ightarrow D]
    • A whole step from D to E (2 keys up) [D
      ightarrow E]
    • A half step from E to F♯ (F♯ is the next key up from E) [E
      ightarrow F♯]
    • A final whole step from F♯ back to G [F♯
      ightarrow G]

  • **F Major Scale:

    • Progression:**
    • A whole step from F to G (2 keys up) [F
      ightarrow G]
    • A whole step from G to A (2 keys up) [G
      ightarrow A]
    • A half step from A to B♭ (this requires correct identification as B♭ to avoid double notes) [A
      ightarrow B♭]
    • A whole step from B♭ to C (2 keys up) [B♭
      ightarrow C]
    • A whole step from C to D (2 keys up) [C
      ightarrow D]
    • A whole step from D to E (2 keys up) [D
      ightarrow E]
    • A half step from E back to F [E
      ightarrow F]

Explanation of Steps in Playing Scales

  • An emphasis on correct counting when ascending scales:
    • Whole steps are typically counted as movement from white key to black key or black key to white key.
    • A half step is described as the immediate next key regardless of color:
    • Example: Between E and F; no black key exists, thus a natural half step.
    • Describe intervals when counting:
    • The importance of recognizing half steps in various locations, such as between B and C, and E and F, where no black key is present.

Chromatic Scale

  • The use of the chromatic scale is noted, which involves every pitch:
    • Starting from C and moving to D and back, demonstrating both white and black keys
    • For a chromatic scale moving upward it is formatted as: [C, C♯, D, D♯, E, F, F♯, G, G♯, A, A♯, B]
    • Conversely, descending gives: [C, B, B♭, A, A♭, G, G♭, F, E, D, D♭, C]
    • Major scales differ in that they do not mix sharps and flats together.

Discussion of Key Signatures

  • Transition to key signatures is noted, explaining their function in music:
    • The importance of notating sharps in a key signature rather than throughout the music piece.
    • Example with G major: once F is indicated sharp in the key signature, each F note in the piece will automatically be F♯ unless indicated otherwise.
  • Explanation of accidental signs, which are symbols that alter the established key signature readings:
    • Accidents will hold until the next measure unless otherwise changed.
    • Definition: Accidental is defined as "a symbol that alters the key signature."

Identifying Key Signatures

  • The indicative nature of sharps in key signatures, elaborating their sequence:
    • Example of one sharp sign indicating F♯ for the G major key signature
    • The students asked to memorize the order of sharps and flats.
  • Key Signature Characteristics:
    • The key signature's last sharp always denotes the name of the key being played:
    • For instance, with 3 sharps (F♯, C♯, G♯) the key is A major since it is a half step above G♯.
    • In flat key signatures, the key name is identified as the second to last flat in the sequence.
    • An example given with E♭ showing B♭, E♭, A♭ as flats with the key being E♭ major.

Practice and Exercises

  • Students are encouraged to look at specific exercises in their texts (referenced as pages 49-50) for additional practice in identifying and writing key signatures for various scales.
  • Emphasis on personal understanding and practicing finding key signatures as a crucial musical skill for further study in music theory.

Conclusion

  • The session wraps up with a positive reinforcement for students and encouragement to continue practicing both scales and identification of key signatures, implying future discussions will build on this foundational understanding.
  • Lesson is officially concluded until the next meeting scheduled for Friday.