structural / Symbolic

Point score

A key-independent polyphonic shape — simultaneous point-sequences (offset lines). The transposition-invariant fingerprint of a counterpoint: two passages in different keys with the same voice motion land on the same point-score, so it is the natural representation for contrapuntal similarity. Its `groupOf` is point-sequence.

How it works

Its shape has no fixed root. Choose an anchor before turning it into absolute MIDI notes.

It groups point sequence objects without requiring an order.

Written forms

Ways to write this concept

Each notation describes the same underlying object. Open an example to see it in every other notation, or load it to hear one MIDI realization in the Code Sequencer.

voices

Pipe-separated voices, each a point line (comma-separated point:duration, offsets from a shared origin).

7:2,5:2 | 0:1,2:1,4:1,5:1 | -12:4

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.

ScoreA polyphonic texture — several voices (temporalized lines / tracks) sounding at once over a shared timeline. The simultaneous counterpart of a note-set: where a note-set stacks single notes into a chord, a score stacks whole lines. Its `groupOf` is note-sequence. Collapse the voices at each instant and you get a chord progression (note-set-sequence) — the resulting chord qualities of the simultaneous notes; conversely, a chord progression can be voice-led into a score. Strip pitch and it becomes a point-score (key-independent counterpoint).Pc scoreAn octave-free polyphonic texture — simultaneous pc-sequences (lines of pitch classes). The octaveless abstraction of a score; keeps voice independence and harmony but drops register. Its `groupOf` is pc-sequence.Point SetA rootless arrangement of semitone offsets from the lowest note. Its shape stays the same when a MIDI voicing is transposed.Point Set SequenceAn ordered sequence of point-sets that may contain duplicates Point song formA song form reduced to non-pitch-specific shapes — section labels and order are kept, but each chord is a point-set (offsets, no key). This is the transposition-invariant structural fingerprint of a song: two songs in different keys with the same form land on the same point-song-form, so it is the natural representation for song-to-song similarity. Its `groupOf` is point-set-sequence.Point sequenceAn ordered, rootless pitch contour. An anchor note turns its relative positions into a concrete line.

How it works

Ways to write this concept

voices

Concept connections