So Percussion, handout photo.

The innovative So Percussion ensemble returns to UT’s Texas Performing Arts again this season for another double-header of boundary-pushing alt chamber music. On Wednesday, the percussion foursome premieres a new work by Steven Mackey co-commissioned by Texas Performing Arts. Then joining with vocalist Shara Worden, lead singer and songwriter for the experimental pop band My Brightest Diamond, So Percussion premieres a new piece by Worden. On March 12, So Percussion performs Steve Reich’s 1971 breakthrough masterpiece “Drumming” with the UT Percussion Ensemble. — Jeanne Claire van Ryzin

Details: 8 p.m. Wednesday. $36. McCullough Theatre, 2406 Robert Dedman Drive. 512-477-6060,