I'm just listening to Sun Ra live in Stockholm, recorded in 1971. Here's an example:

[audio:http://www.bigozine2.com/TRKSB1/SUNRstock/SUNRstock04.mp3]

That's some seriously twisted shit. I mean, Frank Zappa and Sun Ra are quite similar, even though Sun Ra doesn't even touch the levels of commercialism and doo-wop that Zappa played. This shit is intense. Brian Eno posted this link on Twitter, which made me find the album.