Seventeen years after it began tricking neo-Deadheads into listening to jazz, the trio of keyboardist John Medeski, drummer Billy Martin, and bassist Chris Wood is the certifiable leader of an entire movement. Jam-jazz is a bona fide subgenre, claiming bands like Garage a Trois, Jacob Fred Jazz Odyssey, and Soulive.
But Medeski Martin & Wood has refused to sit still. The trio has shifted gears relentlessly, recording with a DJ (on the album “Combustication’’), teaming up with guitarist John Scofield (on both “A Go Go’’ and “Out Louder’’), covering John Zorn (“Zaebos: Book of Angels, Vol. 11’’), veering into the avant-garde (“The Dropper’’), and going totally acoustic (“Tonic’’). This year the trio upped the ante, releasing a trilogy of albums on its own label. Next week those albums - along with a live album, a remix album, a double-LP, and a DVD - will be reissued as part of a box set called “Radiolarians: The Evolutionary Set.’’ It’s an impressive collection spanning a wide range of styles, and it’s the finest thing the band has done yet.