Lists some good...

[lapsang]

music to chill to when you are altered mentally with natural substances

artists name please, not individual songs

songs like this though

"Emotion" - Daft Punk

 

[Seraphin Falls]

I don't use any substances, but I do listen to some ambient/chill music.

You might like BoarRAB of Canada.


Edit: This thread has a lot of good recommendations.

http://forums.offtopic.com/showthread.php?t=3611077

 

[Beezy]

Sleep's Holy Mountain - Sleep (the whole album is super chill stoner metal, very much like black sabbath).

Black Sabbay - Paranoid (whole album)

or if you wanna totally fall asleep:
Ambient Works Volume 1 and 2 - Aphex Twin

 

[real_shalom]

Portishead
Mono
Aphex Twin (like mentioned above)
Air
Orbital - check out the songs Halcyon, One Perfect Sunrise, and Lost
or just every song off Orbital 2 album

 

[Dtcenter77]

well...

The Doors and Pink Floyd are always a great place to start

 

[littledogcb]

Anything Massive Attack.