Though local supergroup Mostly Muff spawned as a hair-metal cover band many years ago, social awareness has always been as much a part of the MM philosophy as its commitment to the era that gave us neon-colored Spandex and acid-washed denim. Whether because band members are busy (they are), or it's to maintain the Muff mystique (it does), MM doesn't play live often. When it performs, however, it's like the snake-on-a-spring in a joke can of nuts: surprising, fun and bursting with energy. It's also an opportunity for MM to support an important cause, and the Saturday, Feb. 17, MM show at Visual Arts Collective is no exception. Proceeds benefit the International Rescue Committee, which "provides opportunities for refugees, asylees, victims of human trafficking, survivors of torture and immigrants seeking citizenship to thrive in America." In an email, MM member Gia Trotter wrote, "With the state of our nation we really feel it necessary to [help] IRC ... and our local refugee families." Plus, MM is covering just one classic band, hinted at in the new MM T-shirt design, so this promises to be a Mostly Magnanimous Mysterious Muff show you don't want to miss.