```
Recordings off various retro computers.

adlib
  Original AdLib Music Synthesizer card on a Nokia MikroMikko 3TT.

amiga
  Commodore Amiga A1200.

c64
  Commodore 64 with either 6581R3 or 6481R4AR.

gf1
  Gravis Ultrasound 3.73 on a P233MMX.

roland
  Original Roland LAPC-I or SCC-1 card on a P233MMX.

spectrum
  Sinclair ZX Spectrum 128K "toastrack".
```