Octorock

from the page itself:

“The IDM chipmusic-on-chip album ‘Today’ was released as a physical 16-bit cartridge for the Sega Megadrive/Genesis video game console. The sound is generated at playtime by the Yamaha YM2612 FM synthesizer chip that is built into the console.

…

Breathing new life into this obsolete Sega console in 2010, ‘Today’ aims to reinvigorate interest in old hardware and the idea of listening to music where the sound is generated each time you listen”