An Oompah Band is a musical ensemble typically associated with German folk music, particularly the traditional music of Bavaria. The band usually features brass instruments, such as trombones, trumpets, and tubas, along with percussion instruments like the bass drum and cymbals. The lively, upbeat sound is characterized by a strong, steady rhythm, often accompanied by a tuba playing a bass line. Oompah bands are commonly seen at festivals, fairs, and celebrations, especially during events like Oktoberfest. They play a variety of tunes, including polkas and waltzes, encouraging dancing and audience participation. The cheerful atmosphere created by these bands makes them a popular choice for social gatherings.