Thanks Larry. I'll check 'em out! Yes indeed on "Metamorphosis" and on "Thingin'"! There's another very good early one pairing Friedman with Attila Zoller released under the guitarist's name, "The Horizon Beyond" (Mercury, rec. 1965, CD reissue on ACT, probably quite OOP). Other good ones include "Invitation" (Progressive, 1978) in trio, the solo "I Hear a Rhapsody" (Stash, 1984), the trio "Almost Everything" (Steeplechase, 1995) or the more recent solo album "From A to Z" (ACT, 2005), which is an hommage to Attila Zoller. If you want to hear him in a band with horns, go for "Hot Pepper and Knepper" (Progressive, 1978) in quintet with Pepper Adams and Jimmy Knepper. I guess as a general recommendation I would just say: don't stay away from later recordings, don't restrict yourself on the early ones just becasue they're on Riverside and look like "classics" - he became better later on! But the two with Zoller (there's a third, "Dreams and Explorations", I think the one recorded first of the three, not half bad either) are indeed very good! I've not heard "My Favorite Things" yet, guess I'll have to get more Don Friedman anyway, sooner or later ... Thanks, ubu! More to explore...
Joe, I'm not very familiar with Katz, but I agree 100% re: Anthony Davis. I particularly dig his collaborations with James Newton.