structural / Symbolic
Pc Set Collection
An unordered collection of unique pitch class sets
How it works
It identifies pitch independently of octave. Playback needs a register or voicing.
It groups pc set objects without requiring an order.
Written forms
Ways to write this concept
Each notation describes the same underlying object. Load a playable example to hear one MIDI realization in the Code Sequencer.
binary
Set of binary pc-set representations
100010111101,100010010101100010010000,100010111101{100010111101,100010010101}{100010010000,100010111101}
numbers
Set of pc-set number representations
0-4-7,0-3-70-4-7,2-5-9{0-4-7,0-3-7}{0-4-7,2-5-9}
quality
Set of traditional quality names, when applicable
maj,min,dimmaj7,min7,dom7{maj,min,dim}{maj7,min7,dom7}
Choose Load beside a convertible example to open its live player. Some catalog formats describe analysis or a display label and have no note realization yet.
Concept connections
Note Set CollectionAn unordered collection of unique note setsNote Set Sequence CollectionAn unordered collection of chord progressions — e.g. a songbook of changes or a library of progressions. A meta-group: a group of groups, whose `groupOf` is note-set-sequence (one level up from a note-set-collection).Point Set CollectionA collection of interval patterns (point sets) that are transposition-invariantPoint Set Sequence CollectionAn unordered, transposition-invariant collection of point-set progressions — a library of progression shapes independent of key. Its `groupOf` is point-set-sequence.Pitch-class spaceA twelve-bin distribution of pitch-class weights. It combines matching pitches across octaves while retaining their counts.Pitch classOne of the twelve pitches from C to B, independent of octave. Transposition rotates its position around the chromatic circle.