Sonic Pi

on YouTube ↗01h 00m

" summary

Sonic Pi is a free, Ruby-based live‑coding environment that runs on macOS Windows and Raspberry Pi, used by over 500,000 users. Code sends timestamped messages to SuperCollider, uses sample‑accurate scheduling with sleep‑ahead drift correction, and implements live_loop concurrency so independent threads play rhythm, bass and melody together. Deterministic randomness comes from preloaded WAV white‑noise tables indexed per thread, and the system exposes managed effect contexts (reverb creation/destruction) so live edits don’t leak resources.

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" chapters (12)

1. 0:00Intro
2. 4:15Demo
3. 10:00Sonic Pi
4. 17:40Formal proofs
5. 21:50Overtone
6. 22:50Learnings
7. 24:50Timing
8. 26:30Making it interesting
9. 30:00Prerecorded sounds
10. 32:15Loops
11. 36:40Concurrency
12. 43:08Scale

" related talks

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• 42mGet Ready to Rock with Sonic Pi - The Live Coding Music Synth for EveryoneSam Aaron · GOTO Chicago 2018