On June 17, 2007, John Romero released a collection of Doom music created by Bobby Prince that was not used in the final game, via his personal website planetromero.com. A few of them are older versions of tracks used in Doom and Doom II; in some cases, the bases for these songs are more evident, whereas the final versions are altered to make the similarities less apparent. They have since been used in various PWADs.
| File | Length | Notes | Based on |
|---|---|---|---|
| opening.mid | 1:03 | older version of D_OPENIN - originally the title screen music for Doom, replaced with d_intro for retail | Peter Gabriel "Powerhouse at the Foot of the Mountain" |
| un08.mid | 0:48 | older version of D_E3M8 | S.O.D. "Sargent D & the S.O.D." |
| un09.mid | 0:40 | Slayer. "Silent Scream" | |
| un12.mid | 0:13 | S.O.D. "Pi Alpha Nu" | |
| un13.mid | 1:13 | S.O.D. "Milano Mosh" | |
| un14.mid | 1:03 | S.O.D. "Pi Alpha Nu" | |
| un15.mid | 0:54 | finished version appears in Blake Stone: Aliens of Gold | Bachman-Turner Overdrive "Let It Ride" |
| un16.mid | 0:28 | S.O.D. "Speak English or Die" | |
| un17.mid | 1:16 | Slayer "Raining Blood" | |
| un18.mid | 0:57 | Slayer "Silent Scream" | |
| un19.mid | 1:36 | older version of D_E1M9 | Alice in Chains"We Die Young" |
| un20.mid | 2:06 | Alice in Chains "Man in the Box" | |
| un21-f.mid | 2:42 | Stone Temple Pilots "Dead & Bloated" | |
| un23.mid | 1:39 | older version of D_IN_CIT | Stone Temple Pilots "Sex Type Thing" |
| un28.mid | 1:38 | older version of D_AMPIE | Alice in Chains "Them Bones" |
| un30.mid | 1:16 | Wolfenstein 3D "Funkie Colonel Bill" | |
| un31.mid | 0:52 | Soundgarden "Rusty Cage" | |
| un32.mid | 2:38 | Soundgarden "Outshined" | |
| un36.mid | 1:16 | originally assigned to E3M6 | Soundgarden "Slaves & Bulldozers" |
| un37.mid | 0:58 | older version of D_E3M2 | Judas Priest "Leather Rebel" |
| un39.mid | 0:23 | Alice in Chains "Rain When I Die" | |
| un41.mid | 1:27 | Alice in Chains "Rooster" | |
| un42.mid | 1:49 | Alice in Chains "Junkhead" | |
| un43.mid | 2:19 | Alice in Chains "Dirt" | |
| un44.mid | 1:47 | older version of D_E2M1 | AC/DC "Big Gun" |
| un45.mid | 2:07 | Alice in Chains "God Smack" | |
| un46.mid | 1:55 | older version of D_ADRIAN | Alice in Chains "Angry Chair" |
| un48.mid | 2:02 | older version of D_E3M3 | Slayer "Behind the Crooked Cross" |
| un49.mid | 4:32 | older version of D_E1M3 | Slayer - "Criminally Insane" |
| un51.mid | 1:19 | Pantera "Walk" | |
| un52.mid | 2:04 | older version of D_SHAWN | Slayer "South of Heaven" |