RelanoteFunctional Music Notation

A pure functional, statically-typed language for describing music through relative intervals

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Relative Intervals & Rhythm

Describe melodies using intervals (M3, P5, m7) instead of absolute pitches. Rhythm is also relative within blocks - 4 notes split time equally, 2 notes take half each.

Pure Functional

Immutable values, first-class functions, and composable operations. Music as data transformations.

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Static Typing

Catch errors at compile time with Hindley-Milner type inference. No runtime surprises.

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Compositional

Build complex pieces from simple building blocks using pipes, layers, and sections.

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MIDI Export

Render your compositions to standard MIDI files for playback in any DAW.

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Web Playground

Try Relanote in your browser with live staff notation and audio preview.

Quick Example

rela

; Define a major scale using relative intervals
scale Major = { R, M2, M3, P4, P5, M6, M7 }

; Pitch is relative: <1> <3> <5> works in any key
; Rhythm is relative: 4 notes share time equally
let fast = | <1> <3> <5> <3> |

; 2 notes = each takes half the block duration
let slow = | <1> <5> |

; Compose and transform
let melody = fast ++ slow
melody |> transpose P5 |> repeat 2