Blizzard decided at the last minute to include licensed classic rock songs in the soundtrack, a rarity when the game was released. Of course at the time, these had to be remade in a chiptune style.
The track listings for the game are:
Black Sabbath - Paranoid
Henry Mancini - The Peter Gunn Theme
Deep Purple - Highway Star
Golden Earring - Radar Love (Genesis version only)
Steppenwolf - Born to Be Wild
George Thorogood - Bad to the Bone