High School Band Orchestra 1955 (Vintage Film Home Movie). A school band is a group of student musicians who rehearse and perform instrumental music together. A concert band is usually under the direction of one or more conductors (band directors). A school band consists of wind instruments and percussion instruments, although upper level bands may also have string basses or bass guitar. School bands tend to be more common in the United States than others due to a vast increase in funding to music education in recent years. School bands in the United Kingdom are generally similar to those in the US although pure brass bands are more commonplace in schools than in the US.