tarps that cover an entire gym floor. Sets must also be designed to function within the space provided. If a performance is in a gym, the materials must be able to enter the gym. If the performance is in a stadium type gym, then doors and openings are easier to access. There are strict rules on the area sets that can be placed on and the time a group is allowed to set them up. Violations of these rules result in score deductions. Uniforms At first, indoor percussion ensembles wore traditional marching band uniforms. As shows and concepts increased in detail, uniforms were left behind, and theatrical costumes took their place. Uniforms could be as simple as jeans and T-shirts for a rendition of West Side Story or as complicated as special jumpsuits with chains and feathers to portray a show like Cirque Du Soleil, though many groups use more modern uniforms. Winter marching ensembles A more recent development in the indoor percussion ensemble genre has been the introduction of mixed-group ensembles, combining winter guard with indoor percussion ensembles, sometimes referred to as winter marching ensemble. References Percussion ensembles Types of musical groups External links "Until Valhalla" The United States Marine Drum and Bugle Corps 2021 Indoor Percussion Show