Proper noun
Kalliope
(astronomy) 22 Kalliope, a main belt asteroid.
Later, an employee of Stoddard's American Music, Arthur S. Denny, attempted to market an "Improved Kalliope" in Europe, but it did not catch on. Source: Internet
Unlike other calliopes before or since, Denny's Improved Kalliope let the player control the steam pressure, and therefore the volume of the music, while playing. Source: Internet