The New Dictionary of Cultural Literacy, Third Edition. 2002.
sonata
(suh-NAH-tuh) A musical composition for one or two instruments, usually in three or four movements. The sonata of the classic era in music had a definite arrangement for its movements: the first and fourth had a fast tempo, the second had a slow tempo, and the third was in either playful style (a scherzo) or in dance form (a minuet).