2727 Russell St., Detroit; 313-567-2030

So you're a musician looking to up your cred in the musical version of Six Degrees of Separation? The RGB Trio's Thursday jazz (mostly) jam at Bert's is a one-stop of Kevin Baconian importance. Bassist Ralphe Armstrong is a former Mother of Invention, former member of the Mahavishnu Orchestra, sideman to Miles Davis, Jean Luc Ponty, Aretha Franklin, James Carter, etc. (He's also a son of late roots giant Howard "Louie Bluie" Armstrong.) Drummer Gayelynn McKinney hails from the musical McKinney clan (she's a daughter of the late jazz-scene sage and Tribe member Harold McKinney), is a member of Grammy-nominated Straight Ahead, and has played with folks from Geri Allen to Benny Golson (the latter just a bit ago at the Dirty Dog — smokin' sets there). Pianist Bill Meyer is a former musical director for Martha Reeves and go-to guy for such ambitious projects as the Mosaic Youth Theatre's Motown show (see above). Plus you never know who else will show up to jam (Martha Reeves, James Carter, Larry Smith, out-of-towners looking for after-the-show action).