In 1999, it's easy to look back at this remarkable lineup--Sonny Rollins, Jay Jay Johnson on trombone, Horace Silver and Thelonious Monk sharing piano duties, bassist Paul Chambers, and drum wizard Art Blakey--and call it an all-star affair. Fact is, it was just as easy to recognize its exceptionality in 1957, when these musicians were all (except for Chambers, who held down a spot in Miles Davis's quintet) respected leaders in their own right. In this case, the collective talent level did not disappoint, instead creating wonderfully alive, assured, and immediate hard bop. The two ebullient Rollins originals and two standards that bookend the record feature Silver on piano; Monk is at the bench on his own ballad Reflections; and the now-famous version of Monk's Misterioso features both pianists. It's interesting to note how Monk's presence affects the mood and opens the mind of the session--even Silver's solo on Misterioso is relatively sparse and pensive when he feels Monk sitting next to him. The lead