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structural / Symbolic

Point sequence

An ordered, rootless pitch contour. An anchor note turns its relative positions into a concrete line.

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Edit pitch and time independently

A line combines ordered pitches with durations. Its rhythm keeps only the time pattern; its point sequence keeps relative pitch movement without a fixed register. Transposing shifts sounding notes while both abstractions stay the same.

Event 1

Event 2

Event 3

Event 4

Event 5

Transpose0 st

Timeline · 5 beats

C41 beat
E41 beat
G42 beats
Rest0.5 beats
C50.5 beats

Melody · MIDI:beats

60:1,64:1,67:2,r:0.5,72:0.5

Point sequence

0:1,4:1,7:2,r:0.5,12:0.5

Rhythm

1,1,2,r0.5,0.5

Pitch classes

0,4,7,~,0

The sequencer pattern uses duration weights: a two-beat event occupies twice the cycle span of a one-beat event.

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.

offsets

Open guide

Order only, no durations: comma-separated point offsets from the start.

beats

Open guide

Canonical timed notation: comma-separated point:duration pairs (non-negative offsets from the start), duration in beats (quarter = 1). Use 'r' for a rest.

ticks

Open guide

MIDI-like: point:duration pairs with the duration in MIDI ticks (default 480 PPQ).

ms

Open guide

Absolute time: point:duration pairs with the duration in milliseconds (default 120 BPM).

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 sequenceAn ordered line of notes and optional rests. Adding durations makes its rhythmic placement explicit.Pitch-class sequenceAn ordered line of pitch classes without fixed octaves. Choose registers to turn it into MIDI notes.RhythmA sequence of durations and rests without pitches. It can time a melody without changing its note choices.Fractional Rhythmic PatternRhythmic patterns based on fractional subdivisions of timePoint Set SequenceAn ordered sequence of point-sets that may contain duplicatesPoint 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.
Sources and playback

Concept descriptions and examples were adapted from Maru Mono’s typed catalog and concept examples. The Code Sequencer plays MIDI through a connected instrument; Symbolic does not synthesize sound.