Sointu: a modular software #synthesizer for producing music for 4k intros -- small executeables with a maximum filesize of 4096 bytes containing real-time audio and #visuals, written with the #gio framework for #go. The sound is produced by a #vm that executes small #bytecode to produce audio. A fairly capable synthesis engine can be fit in 600 bytes (386, compressed), with another few hundred bytes for patch ad pattern data
