noun
sousaphone
SOO-zuh-fohn/ˈsuːzəfəʊn/
A large brass bass instrument that wraps around the player's body, used in bands.
The sousaphone wraps around the musician's body as the band marches.

Etymology
The instrument is named for John Philip Sousa, the American bandleader and composer. This establishes the personal connection behind its name, but leaves the remaining element unexplained in the supplied evidence.
More examples
- She plays the sousaphone in her high school marching band.
- Two sousaphones provide the deep bass notes during the parade.
- He polishes the sousaphone's wide bell before each performance.
Forms
sousaphone · sousaphones
Similar words
- tuba
- Names the broader instrument family, including upright and wraparound designs.