At Doom's Gate
At Doom's Gate was one of the first heavy metal tracks that Bobby Prince composed for Doom, and it is also the first level music you'll hear since the song is played in E1M1: Hangar. The title is a play on words, meaning that you are at the gates of the concept of doom, while also at the gates of the game itself. The song starts a trend with the game using a heavy metal genre. The song consists mostly of electric guitars and drums. Like much of Doom's music, fans have compared this track to other heavy metal tunes Prince may have used for inspiration including the work of Metallica's Master of Puppets and No Remorse, King Diamond's The Family Ghost, and D.R.I.'s Hooked (Slayer's Behind the Crooked Cross is very similar to Hooked).
Bobby Prince had this to say about the track:
"At Doom's Gate" plays in E1M1: Hangar, the first level of the game.
The internal name of the song is "D_E1M1".
In the Sega 32X version of Doom, "At Doom' Gate" can be heard in the Main menu (replacing Introduction, although it is still present on the game's ROM), during the demo rotation, on MAP01: Hangar and MAP10: Containment Area (replacing The Demons From Adrian's Pen song, since it is absent there).
The Atari Jaguar version of Doom lacks any in-game music due to hardware limitations, so instead plays tracks from the original PC soundtrack in-between the levels. This song is played after the level Containment Area.
The SNES version features this song on E1M1: Hangar, as usual.
The 3DO version features this in the Title screen, Main menu, on MAP01: Hangar as usual, on MAP12: Deimos Lab (replacing They're Going to Get You) and after the completion of a level (replacing Intermission From DOOM).