This is a small and rather crude Futhark library containing combinators for describing sounds, which can then be sampled to produce audio files.

The library is largely a port of fpsynth by Joakim Ahnfelt-Rønne and Michael Werk Ravnsmed.

The following makes use of Literate Futhark. See also this blog post on generating audio with Literate Futhark.

import "lib/github.com/diku-dk/larm/larm"

def music : sound =
  scale 0.5 ((progressions.IxVxvixIV instruments.experimental
              `to` (progressions.IVxIxV instruments.experimental))
             `both` repeat 1 (progressions.bass instruments.bass))

def sample_music start end =
  sample start end 44100 music

> :audio sample_music 0 15;
codec: mp3

I do not know how to embed this in a GitHub README, but it sounds a bit like this.