structural / Symbolic

Score

A 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).

How it works

This object can carry concrete values or a musical interpretation, depending on its notation.

It groups note 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.

voices

Canonical: pipe-separated voices, each a melody (comma-separated pitch:duration, beats). Voices share a start time.

67:2,65:2 | 60:1,62:1,64:1,65:1 | 48:4
72:4 | 60:2,64:2 | 48:1,55:1,48:1,55:1

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.

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 scoreA 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.Note setA group of concrete MIDI pitches with octaves. It specifies one voicing and can be reduced to pitch classes or a rootless point shape.Note RangeThe span between a lowest and highest MIDI note. It describes a register boundary, not every note inside it.Note Set SequenceAn ordered sequence of note sets (chords) that may contain duplicates Song formA chord progression arranged by labeled section (intro, verse, chorus, bridge…) — the harmonic skeleton of a lead sheet or guitar-chord chart. An ordered, named sequence whose sections are chord progressions (its `groupOf` is note-set-sequence). Forget the labels/order and it becomes a collection of progressions; forget pitch and it becomes a point-song-form (a key-independent structural shape for comparing songs).

How it works

Ways to write this concept

voices

Concept connections