This year’s Thelonious Monk Competition is a little different from the others. It’s still the most prestigious of its kind, the launching pad for many careers, and the focus of the jazz world’s attention over its September weekend. But this year the competition focuses on the drums—an instrument it hasn’t spotlighted for 20 years—which means that Carl Allen, the competition’s house drummer who’s usually the man contestants have to keep up with, is a judge instead. The finalists won’t be supported; they’re doing the supporting. It’s a new dynamic that will be as unpredictable to watch as it will be fun. Free to $75.