Starting in the mid-1940s, drummer Roy Haynes made his name accompanying Lester Young, Charlie Parker, Sarah Vaughan, John Coltrane, and Stan Getz, among many, many others. While his contemporary Art Blakey was a born bandleader with a recognizable sound he left untouched for four decades, Haynes--one of the most brilliant percussionists jazz has ever produced--adapted his precise, snappy attack and unmistakable elastic sense of time to the needs of each new collaborator. And though it was Blakey's Jazz Messengers that became famous as an academy for future stars, Haynes's own groups have turned out some important players as well, including Ralph Moore and Craig Handy. His latest protege is saxophonist Marcus Strickland--heard in town last fall with Dave Douglas--who's quietly developing into an impressive leader in his own right. Strickland's new Twi-Life (Strick Muzik) is a double CD, featuring an acoustic quartet on the first disc and a funk-tinged electric band on the second; throughout he sounds like a natural. This stand continues through Sunday, August 6; see also Wednesday and Thursday. Tue 8/1, 8 and 10 PM, Jazz Showcase, 59 W. Grand, 312-670-2473, $20.