Explore the world of code-based music creation and performance with Sonic Pi in this 47-minute conference talk by Sam Aaron at GOTO Aarhus 2023. Discover how this free tool targets both education and professional musicians, allowing beginners to code beats, bass lines, and synth riffs while learning core computer science concepts. Dive into the technical aspects of live coding systems, examine Sonic Pi's IO sub-system implemented on the BEAM in Erlang and Elixir, and witness the future of Sonic Pi with live coding visualizations synced to music. Experience live code demonstrations, engaging discussions on teaching coding to kids, and insights into Sonic Pi's inner workings, complete with noise and psychedelic imagery.