Michael Jackson (incl. Jackson 5, Jacksons)
Earth, Wind & Fire
Stevie Wonder
Boys Town Gang
Wham!
Nik Kershaw
ABBA
Billy Joel
Queen
Smash Mouth
Steely Dan (incl. Donald Fagen)
The bg-sound project! (the reason this even works)
If you have JavaScript (and WebAssembly) enabled, just click on the MIDIs to listen to them immediately.
To download them, right-click or long-press on them and click "Save Link As..."
If a MIDI doesn't sound good, try playing it with this! (Soundfont MIDI Player)