A tuba with its tubing designed for placing the instrument on the player's lap is usually called a concert tuba or simply a tuba. Tubas with the bell pointing forward that wrap around the body are often called a sousaphone, named after the famous bandmaster John Philip Sousa. In most other respects the sousaphone is technically very similar to a standard (upright) tuba.
The sousaphone is widely employed in marching bands and various other musical genres. The bell of the sousaphone is normally detachable from the instrument body to help with transportation and storage.