Happy the Man! Yeah they're a very cool band from the mid to late seventies and I believe a new version of the band is touring and recording again.
If your looking to buy, I'd get the two original line-up releases,
"Happy the Man" and "Crafty Hands" from '77 & '78, definitely at their original creative peak.
They also have a website. http://www.happytheman.com
Also check out Kit Watkins, the original keyboard player. Who has a solo career now.