The 29th Street Saxophone Quartet (which consists of Bobby Watson and Ed Jackson on altos, Rich Rothenberg on tenor, and baritonist Jim Hartog) is much more conservative in style than the other main a cappella sax groups (the World Saxophone Quartet and Rova), but although based in the hard bop tradition, it does have its free and explorative moments. Highlights of this generally stimulating CD include Thelonious Monk's "I Mean You," Bud Powell's "Un Poco Loco," Charlie Parker's "Confirmation," and Watson's "Wheel Within a Wheel."