Emulates Nintendo's Sharp LR35902 sound hardware: 2 pulse waves for melody/harmony, 1 wave channel for bass, 1 noise for percussion.
Finds MIDI sources, parses tracks, maps to GB roles, resynthesizes with Web Audio. Everything runs client-side.
Site: https://www.wario.style
Open source: https://github.com/b1rdmania/motif
Hobby project, non commercial, so please don't sue me.