The Jimi Hendrix Experience

Fierce tracks that arrived around the dawn of heavy metal!

See the gallery.

See how many you can guess correctly.

See that and what else made the cut.

And it's going up for sale soon.

The pieces of music history are expected to fetch big bucks.

The list of incredible supergroups can go on a while, but have you ever sat and wished two bands that never played together, actually did (or would)? We put together a list of five supergroups we wish actually existed -- either past or present.