when kesey held these acid tests, as they were known, they'd have two vats.e scene is a lot of light shows and music and people dancing. when the dead were playing, it was a way to feel that acid in waves. and i looked down and i saw kids in front of me moving to the music. they looked up at me and i said, "yeah." ♪ >> the drug culture really took hold. and that's where artists, whether it was the grateful dead or jefferson airplane, were able to embrace it and put it in their music. >> the counterculture in california is born because more and more people want to try to experience what kesey experienced, and he kind of became the grand poobah of the carnival of san francisco in the '60s. >> there's nothing a grown-up or sophisticated in taking an lsd trip at all. they're just being complete fools. at t-mobile, get a sweet tablet on us. right now, when you get a new data plan, you can also get our most popular 7 inch tablet with no money down and no monthly payments. [engine revving] [engine revving] [engine revving] ♪ introducing the first-ever 306 horsepower