Dig this video of Captain Beefheart and His Magic Band playing “Electricity” and “Sure Nuff ‘N Yes I Do”, from his debut album Safe as Milk in 1968.
And here’s the dadaist advertisement Beefheart created to promote Lick My Decals Off, Baby in 1970. This was actually played on TV! People were calling the stations to complain about it.
And see a documentary about Don Van Vliet aka Captain Beefheart here.
This may show what a square I am, but personally I prefer his albums which are neither completely avant-garde like Trout Mask Replica (which I can certainly listen to, when I’m in the right mood) nor the attempted “sellout” pop albums like Unconditionally Guaranteed. My favorites are Safe as Milk, which is a very unique take on psychedelic blues and garage rock that Beefheart would never return to, and The Spotlight Kid , with snakelike grooves and angular blues in tunes like “Click Clack”, “Grow Fins”, and “I’m Gonna Booglarize You Baby”. Best of all may be the epic Mirror Man, with its title track that does a vorticist twist on Mississippi Fred McDowell’s deep Delta rhythms.