Doom is 18 years old. I guess it's significant, because if Doom were a person it could vote, smoke, and drink in some countries. Doom is an adult now.

I first saw Doom in its original shareware release weeks after I came home from college in the office of my High School band director, Ray  Dietz. id Software created a masterpiece.

They have a 30 minute video that you just have to watch.

lupinx-Kassman said:

-Almost every song Mark Klem and Tolwyn has made for a project.

Agreed, so I am surprised no one has mentioned STRAIN yet. Especially that crazy medley from level 2 and really memorable tunes from levels 11 and 14.

When it comes to entire WADs, Icarus is #1 for me. It has a recurring theme (and a cool one!) that appears on levels 2,7,12,26... maybe more. Also the music from the 1st level is worth mentioning. And 22 (But it's actually a J.S.Bach's fugue; I couldn't be more surprised when I heard it in a Doom level)

MM: levels 9,11,14. MM2: levels 5,9 (fantastic riff),14 and 26 (when all of a sudden, a theme from MM appears).

Requiem seems much weaker, but levels 7 (a tribute to Rush) and 11 have cool tunes again.

OK, if I had to skip Klem & Tolwyn, I would choose HR2. Heavy metal tracks suit the levels well and this music is not as naive as "heavy" music from original Doom.

Ahhh. Good times. For the record, I still write music, and actually still write music for games, but I don't normally use the nickname Tolwyn anymore.