Listen to CLEAR SPOT by Captain Beefheart.
Listen to SUN ZOOM SPARK by Captain Beefheart.
No real justification needed for Captain Beefheart. As I get more into this Blip.fm thing, I find myself wanting to upload songs for the blog so I can then play them on the Blip station. You see, it can only play what it can find on the internet. So if I put it on the internet, it can find it!
I'd have to think about this, but these two tracks are probably just about the two songs you'd need if you're interested in hearing Beefheart, but not bothered to become a fan.