Let this be a lesson to all of you…never ever heckle the tuba player in the Texas Southern University marching band. Video shot in the stands shows the tuba-ist bopping along to the music he was playing. All the while, he was being heckled aggressively by a Jackson State fan that was in his face. Without missing a beat, the tuba master appears to utter something to the man just before he lands four punches to the face. And then…the music continued. It’s not known what started the altercation, if the heckler was injured, or if there was police involvement.