Project Doom

Project: Doom is a series of remixed MIDI files of the classic Doom game's music, all in heavy metal/electric genre, made by Jay Reichard (silentzorah). Mods that make use of Project: Doom tracks include 3 heures d'agonie 2 & 3, 32in24-9, Bloodstain, Community Chest 3, Diet 32in24, Doomworld Mega Project 2012, 2013, & 2016, Fuel Devourer, the Japanese Community Project, Jenesis, Sunder, Sunlust, and Swift Death. Tracks are also used in Doom Zero, though not in the official add-ons release.

Project: Doom
Project Doom was originally completed in 2007. Some bonus tracks were added later.

Ultimate DooMix
These are bonus tracks that mix two different Doom songs together.

Project: Redux
Starting in 2015, Project: Redux is an ongoing effort to create more remixes of Doom's soundtrack for Jay Reichard's Doom Gaiden. Contrarily to Project: Doom, it is not limited to heavy metal and electric genres, though it is still the dominant theme.