There is an unofficial Russian port of Doom for the ZX Spectrum that was never finished. Actually, since none of the code is based on the original Doom game, its not really a port. But it had awesome music. Here it is.

Tracklist

1. Sauron — DOOM HARD TECHNO
2. Sauron — DOOM_2
3. Sauron — DOOM-1
4. Joe — DOO-O-O-O-OOOM!!!

Runtime 6:40

No. 21: Doom (ZX Spectrum) [ 6:40 ] Play Now | Play in Popup | Download