Louisville senior Megan Seitz, (from left) Frankfurt junior Marjorie Mason, Taylorsville sophomore Shelby Hughes, and Louisville senior Ellen Emerson, boo Louisville sophomore Trevor Neaveill, and his fellow Red Shirt members as they crash the Treblemakers audition Thursday, Aug. 25, 2016, in FAC. The Red Shirts and Treblemakers have a long standing rivalry as the two a cappella groups on campus.