I've only had LSD once [liquid from a best friend] ... I tried a little Tool and Led Zepplin at first, couldn't get into it.
Then my playlist settled upon Sigur Ros, and for the next 18 hours, with the exception of a small bit of chill/electronica [a few tracks by Telepopmusik come to mind], the only music I could tolerate listening to is the "post-modern rock" sort ... Sigur Ros, Godspeed! You Black Emperor, Explosions in the Sky, Mogwai.
Trying to assemble the various bits of the entire planet into an understandable guide whilst listening to Sleep by GSYBE certainly tested the bounds of my brain. Rarely listen to it these days .. but when I do, I recapture it as the essence of music. All other modern stuff is truly inferior in a sense; nothing is more truly musically amazing than those epic tracks.
With that as my soundtrack, my LSD experience was one of profound, endless peace.