structural / Symbolic
Pc Set Sequence Collection
An unordered, octave-free collection of pc-set progressions. The pitch-class abstraction of a note-set-sequence collection; its `groupOf` is pc-set-sequence.
How it works
It identifies pitch independently of octave. Playback needs a register or voicing.
It groups pc set sequence 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.
list
Canonical: semicolon-separated pc-set progressions (pitch classes 0–11).
0-4-7,5-9-0,7-11-2; 0-3-7,5-8-0
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.