Here are some from my "stoned" playlist. Mostly late 60's & early 70's psychedelic/classic rock stuff

WAR- Low Rider, Spill the Wine
Big Brother and the Holding Company(Janis Joplin)- Summertime, Ball and Chain
Allman Brothers- Dreams
Emerson, Lake, and Palmer- From the Beginning
Frank Zappa-Cosmic Debris
Jefferson Airplane-Crown of Creation, White Rabbit
Santana-Treat
Pink Floyd-Set The Controls for the Heart Of The Sun