When I roll or trip I like to listen to This Suffering by Billy Talent or The End by Blue October in fact I'll make a list here of some good songs of different genre's I like to listen to maybe you will like one of them
Raindrop - Chopin (classical)
Heavens mirror (Italian version) - Motoi Sakuraba (classical)
This suffering - Billy Talent (rock/punk)
The end - Blue October (rock)
Forsaken - Dream Theater (technically metal I think but sounds like rock)
Overdose - Hurt (rock)
House carpenter - Hurt (rock)
Plugin baby - Muse (rock)
The noose - A Perfect Circle (rock)
Lost in hollywood - System Of A Down ( or any system song for that matter
) (rock)
I wish - Infected Mushroom (techno/Trance)
Gerontion (Orpheus remix) - Luc Poublon (dance/Trance-ish)
Colony of birchmen - Mastadon (metal)
Alien Angel - 3 (metal)
Dance with the devil - Immortal Technique (rap)
and thats all I can think of at the moment hopefully you like these songs. They're best when tripping or rolling IMO but whatever your drug of choice for listening to music is then do that.