Punk-spirited marching band Mucca Pazza emerged from a street protest against the invasion of Iraq in 2003, but they’ve evolved into a group with mainstream appeal. With a rambunctious crowd of more than 30 members (including their own cheerleaders), frenetic patchwork tunes, and a kitschy sense of humor, they’ve won over audiences at Lollapalooza, the Montreal Jazz Festival, and Late Night With Conan O’Brien among others in their 13 years as a band.