I never really got into them till my dad played me one of his old vinyls, real amazing stuff, Knife Edge from their self-titled album stands out to me the most. A lot of bands, including Yes, were inspired by them. You might wanna give them a shot, even if you normally don't listen to the space rock/instrumental/jam/jazz/rock etc. style of music.
Link... YouTube - ELP - Knife- Edge
