Pink Floyd
Purely magical. I have nothing against LSD. With Pink Floyd music, you don't need it.
The Beatles
What didn't they do? What didn't they do better? What didn't they do first? Pretty good songs, too.
Frank Zappa
You just gotta listen to Frank Zappa.
Oingo Boingo
Disco skeletons. Colorful, heavy pop with Danny Elfman, who should get more props as a vocalist.
Jethro Tull
Consistently top-notch, ever evolving, yet always true to their original spirit. It's poetry set to electric folk and distorted classical. The leader is some crazy flute-wielding pirate.