A Band Leader is a musician who directs and coordinates a musical group, often called a band. This person is responsible for setting the tempo, guiding the performance, and making decisions about the music selection. The band leader may also play an instrument or sing, and they often communicate with the band members to ensure everyone is in sync. In many cases, the band leader is also involved in arranging music and rehearsing with the group. They may lead various types of bands, such as jazz bands, marching bands, or orchestras. A well-known example of a band leader is Duke Ellington, who was famous for his contributions to jazz music.