Marsh spent his summer vacations being active, going outside and digging trenches and tunnels, building tree houses, and constructing forts. He and his family were engrossed in several musical activities, with musical background dating back to Les Brown, Marsh's grandfather. His household was filled with several different musical instruments and over the years, Marsh learned to play the banjo, trombone, trumpet, and guitar. As Marsh recalls, he would "sing into fake microphones and create full rock bands with friends and family."