A big band is a large musical ensemble that typically consists of 10 to 25 musicians. It features sections of brass instruments, woodwinds, and a rhythm section, which usually includes piano, bass, and drums. Big bands are known for playing jazz music, particularly styles like swing and bebop, and they often perform arranged pieces that highlight the talents of individual musicians. Big bands became popular in the 1930s and 1940s, with famous leaders such as Duke Ellington and Count Basie. They played a significant role in the development of jazz and were a staple of dance halls and radio broadcasts during the swing era. Today, big bands continue to perform, celebrating the rich history of jazz music.