@countzero
But it *is* possible! All it takes is a MIDI sequencer, Sunrize Studio16 or some other multitrack audio program like AudioLabs' ProStationAudio, etc
This guy obviously didn't produce the entire album on the Amiga though, as is evidenced by people saying that the mastering was done professionally...
Still, it sounds like he has enough outboard gear that perhaps he was just using the Amiga 500 as a MIDI sequencer, and then using some kind of mixer/recorder... there's no way that his sound sources were 100% Amiga.
-trilobyte