theory musical terms

aggregate

any statement that has all 12 pitch classes without regard to order or duplication

invariance

involves pitch classes that are shared by any 2 collections of pitches

combinatoriality

the process of combining subsets of row forms to form aggregates

all interval row

a tone row that contains exactly one appearance of each interval

third stream

a movement that attempted to blend jazz and concert music without condescending to either

segmentation

the process of identifying and labeling important pitch class sets

derived set

a row that uses the first 3, 4, or 6 notes as a pattern from which the rest of the row is derived

matrix

a method of writing all 48 possible forms of a given row in a 12×12 table

neoclassicism

adherence to the classical principles of balance, coolness, objectivity, and absolute music, with the corollary characteristics of economy, predominantly contrapuntal textures, and diatonic as well as chromatic harmonies