John Valentine
Surge sound design

I enjoy designing sounds, particularly physical-sounding instruments.

Use these sounds for free

  • The synth plugin (Surge XT) is free and open source, available as VST, AU, and CLAP, for many platforms.
  • My patches are free, released under a maximally permissive CC0 licence. You can donate to support this work.

Find my patches in the Surge XT patch browser, under John Valentine, or download Dev pre-release patches.

Surge XT patches




  • Bassoon
  • Cor Anglais
  • Flute
  • Folky High Pipe*
  • Recorder

Plucks & Guitars


Chromatic Percussion