One of many percussion instruments, tenors are single-headed drums that are mounted four-six to a frame which is attached to a carrier which a person wears over his/her shoulders. They are used in marching bands and drum corps. Each tenor is a different size and can be tuned to a different pitch. They do not produce a resonant sound like tympani. If there are four drums, they can be called quads; if five, quints. The 5th and 6th drums are tiny and called spot drums.