Joshua Trinidad has a handle on jazz. As host of the Thursday-night Jazz Odyssey show on KUVO, the guy regularly gives spins to cats like David Murray, Matthew Shipp and the Bad Plus. The inventive trumpeter and his Sputter bandmate, drummer David Kurtz, have teamed up as Cougar Legs to host Monday-night jam sessions at the Meadowlark, in which like-minded players come down to improvise together. Monk and Dizzy once turned Minton's Playhouse on New York's 52nd Street into a bebop laboratory, and the Meadowlark just might be the Denver equivalent. It's the type of place where cats who've never met can vibe off each other in an exploratory setting. The jam has grown by word of mouth over the past few months, even attracting non-jazz-centric players.