a musical composition of a free form usually incorporating several familiar themes
"The orchestra premiered a new fantasia that wove together popular tunes from last year's summer festival into an improvisational masterpiece."
A form of instrumental composition with a free structure and improvisational characteristics; specifically, one combining a number of well-known musical pieces.
"The orchestra premiered a whimsical fantasia that wove together familiar tunes from classical ballets into a seamless, improvised-sounding masterpiece."
A surname.
"The local jazz band featured a talented musician named fantasia who played an impressive solo on the trumpet."