Here is all of the music from the game DOOM in General MIDI format.

Enjoy.

Remember that all this music is the property of Id Software.  Do not use in
your own demos/games without their permission.  This is merely for your
personal listening pleasure.

Extracted/Converted by Jeremy Blackman [ranma@eskimo.com]
Conversion Routines by Joakim Erdfelt  [joakim.erdfelt@swbbs.com]
       [with some small help on MIDI format from Jeremy Blackman]