Judging from his discography, keyboardist Craig Taborn is pretty well in control of his ego. In almost 15 years, he’s released only three albums under his own name–he prefers collectivism and collaboration, and they keep him extremely busy. Two recent ECM releases demonstrate his knack for catalyzing radically different projects: with Roscoe Mitchell’s Transatlantic Art Ensemble, he sticks to piano and splits the difference between jazz and contemporary classical, while on Prezens, from guitarist David Torn, his Hammond B-3 and Fender Rhodes flow and churn like lava through the post-Agartha Miles-style maelstrom. Even Taborn’s own Junk Magic–a heavily electric band with violist Mat Maneri, Bad Plus drummer David King, and saxophonist Aaron Stewart–forgoes front-line solo action in favor of viscous swirls of sound. (Their appearance should be a highlight of the upcoming Pitchfork fest.) This weekend Taborn will improvise on acoustic piano with drummer Mike Reed and bassist Josh Abrams–expect anything from sophisticated swing to dark torrents of Cecil Taylor-esque tone clusters. Both shows will be recorded for a possible live album; trombonist Jeb Bishop will join the trio for its second set tonight. See also Saturday. a 9 PM, Velvet Lounge, 67 E. Cermak, 312-791-9050, $15.