Music pack

A music pack is a fan-made collection of music intended to replace the music of either an IWAD or another PWAD of maps. Notable examples are the IDKFA music pack and the Plutonia MIDI Pack. Since the music of the original Doom games were all MIDI files, many music packs are also collections of MIDIs. In this case, they are also known as a MIDI pack.

During the early years of the Doom scene in the 1990s, some mapsets were released as two separate PWADs: one for the maps, and the other as an original soundtrack. The latter also qualify as music packs, since they can be used with any other mapset for the same IWAD. Notable examples are Memento Mori and Requiem.

The method to use a music pack that is supported by both vanilla Doom and all source ports is creating a with the -file parameter. In the batch file, the music pack needs to be listed after a map PWAD that has its own music. Another useful item is the IDMUS command that switches which song is played.