Binary form

Binary form
(BIE-nair-ee form)

Two-part (A - B) structure of music; usually each part is repeated. The term can also mean any form with two periods, or sections.

Brahms: Symphony No. 1 in C minor, Op. 68, IV (main theme strings): W. W. Norton - 4-CD Musical Example Bank -- Disc 1, Track 11
Traditional: Greensleeves (arr. for harpsichord): W. W. Norton - 4-CD Musical Example Bank -- Disc 1, Track 30