DIATONIC

Before
2: SU
simple
After
1: S
chords, scale, scales, notes
2: SU
triads, genus, music, major, system
3: SUU
melody, harmony, intervals
3: USU
collection
Surrounder Phrases
chord progressions, progression, tones, structureharmonic progressions, progression, tones, minor, intervals, structure, modes, interval, mode, style, context, scale, music, systemseventh chord, chords, harmonic, scaletonal harmonies, melodies, harmony, melody, music, progression, pitch, structure, scale, system, context, styleminor triads, tonality, semitone, triad, chords, chord, harmonies, seventh, scales, scale, mode, modes, harmony, intervals, collectionsmelodic intervals, progression, minor, tones, passages, style, interval, pitch, structure, modes, notes, mode, music, contextsimple harmonic, melodies, harmonies, melody, melodic, chords, steps, chord, tones, structure, progression, style, modes, modeaccordion music, styleoctave intervals, passages, scalemajor triad, triads, tonality, semitone, chord, chords, collections, steps, seventh, scale, modes, scales, mode, westernharp musicinterval scales, between, scalepurely melodic, harmonic, westernintervals betweenharmony betweenpitch intervals, interval, mode, scale, collection, structureseven pitches, steps, tones, major, scales, notes, passages, modes, collectionsmelody noteswestern tonal, music, style, half, modesscale tonal, tones, structure, passageshalf octave, tones, stepsbasically simplemusic collections, collection, stylebetween pitchesits harmonies, melodic, tonal, tonality, melody, structure, progression, major, harmonic, context, octave, melodies, genusharmonies betweencollection system, intervalmodes modescales scaleessentially simplestyle scales