From the rock section:
Psychedelic Rock
Psychedelic refers to the experience the mind has when in an almost subliminal state. The boundaries of this genre are not clearly defined and spill into Stoner Rock, Acid Rock, and Progressive Rock among others. The aim is to create trippy pieces of music using vocals that either flitter or are of a low rumble. The bass is usually quite prominent to create a heavy, sedated feel and the guitar riffs are very distorted and either very jumpy or smooth and paralysing.
The Beatles Sgt Peppers Lonely Hearts Club Band is the first recognised album to incorporate psychedelic features. Bands from all over the rock world can fit into this genre.