Boxing meets opera at Out of the Box Opera’s annual Diva Cage Match, where classical singers in evening gowns will square off in a fight to the finish. It all takes place at Uppercut Boxing Gym, a venue that’s not only a hotspot for sports-related classes and competitions, but also hosts hip outlier events on occasion. (The Walker Art Center brought performance artist Nora Chipaumire here last March, for example.) For Diva Cage Match, six opera singers—some local, some from out of town—will sing their hearts out over the course of three knockdown rounds. Celebrity judges will choose the winner of the Opera Diva Champion title. It’s all a part of Out of the Box’s mission to take opera out of the concert hall and into the community, hopefully attracting interest beyond typical season ticket holders. Find tickets at www.brownpapertickets.com.