This door is opened elsewhere...
I like to calm the nerves while Dooming by listening to Twisted Abortion Massacre, Bitch Sisters and the Voreheads, Guerilla Apocalyptallica X, or Period Blast Parade.
Of course, these are all pumpkincore bands, but I have very varied tastes and will sometimes put on lumpcore, fecescore, corecore, acidcore, basecore, acidbasecore, silentcore, traincore, kazoocore, and even chainsawcore.
You forgot glitchcore.
With myself, it varies, but most of the time I have an Aubrey Hodges jukebox on autoload (based on DBThanatos' code) that randomly plays music from PSX Doom, PSX Final Doom, Doom64 and Quake 64. I'd post it, but it's 150MB.