Chapter 12, Classical Forms: Theme and Variations, Rondo
Symphony No 94, the "Surprise" Symphony
1791, Joseph Haydn, Genre: Symphony, Form: Themes and Variation
Theme and variations
Form occurs when a melody is altered, decorated, or adorned in some way by changing pitch, rhythm, harmony, or even mode (major or minor)
Trumpet Concert in E major
Haydn, 1796, Third movement, Allegro (fast). Genre: Concerto, Form: Rondo
finale
The last movement, often where Rondo is used of a sonata, quartet, or symphony
Rondo Form
Three statements of the refrain (A) and at least two contrasting sections (at least B and C). Often the placement of the refrain creates symmetrical patterns, such as ABACA, ABACABA, or even ABACADA.