Abstract visual glitch art with P'', a subset of the programming language better known as Brainfuck. Programs are generated at random, and run while the tape (memory) is visualized and used to phase modulate a single sine wave.  P'' has only 6 commands, equivalent to: ptr++, ptr--, *ptr++, *ptr--, [ and ], which corresponds to while(*ptr){}. This makes it fairly easy to generate well-formed code at random. Watch with the audio on OpenProcessing: