UIL State Marching Band Contest Combo: 1A Prelims/5A Finals/1A Finals brings a full day of high-energy marching band competition to the Alamodome in San Antonio. Bands from across Texas take the field with precision drills, bold music and plenty of school spirit, all inside one of the city's biggest venues. It's a big, loud and totally unforgettable way to celebrate the state's best young musicians.