The DOS version of the game starts up with the in-game music turned off as default. The PC speaker version of the song, coupled with the sound effects of the game, would drive anyone to madness. The sound effects masked the Bomb the Bass tune playing in the background. The other versions of the game have music turned on as default.
The theme tune is Megablast by Bomb the Bass. This was released in the UK ca. 1988 on the album Into the Dragon. It is a reworking of the theme from the John Carpenter movie Distretto 13: le brigate della morte (1976). The Amiga soundtrack is regarded as a much better soundtrack than the Atari ST version, thanks to its sampled nature instead of the weaker synth sound of the ST version. An obscure detail is the fact that Tim Simeon from Bomb the Bass used an Atari ST in the studio to produce the Megablast track.