A toccata is a fast piece of music for the piano, organ, or other keyboard instrument.
toccata in British English
(təˈkɑːtə)
noun
a rapid keyboard composition for organ, harpsichord, etc, dating from the baroque period, usually in a rhythmically free style
Word origin
C18: from Italian, literally: touched, from toccare to play (an instrument), touch
toccata in American English
(təˈkɑtə)
noun
a composition in free style for the organ, piano, etc., generally characterized by the use of full chords and running passages and often used as the prelude of a fugue