Twelfth Hour is played in E3M3, E3M7, E6M3, and E6M7 in Wolfenstein 3D (DOS).
Twelfth Hour is track 23 in the game's data. Its title in the IMF meta data is "12TH". This song is not in the shareware release of Wolfenstein 3D.
Bobby Prince composed this song in Sequencer Plus Gold.