If it were boxing, it would be the main event, a battle between two heavyweight champions. In one corner, Brad Mehldau is the reigning king of jazz piano, whose pianistic prowess has knocked people out for two decades. In the other, the Bad Plus have developed a sound concept with taut execution and ferocious yet restrained intensity that allows them to explore a rock aesthetic, even as they play free jazz. These two über groups have taken the piano trio genre to places heretofore never ventured — which for this show means the Valley.

Sat., Dec. 6, 8-11 p.m., 2014
(Expired: 12/06/14)