rondo

Rondo and its French part-equivalent rondeau are words that have been used in music in a number of ways, most often in reference to a musical form, but also to a character-type that is distinct from the form. Although now called rondo form, the form started off in the Baroque period as the ritornello, from the Italian word ritornare meaning "to return" – indicating the return to the original theme or motif ("A"). The typical Baroque ritornello pattern is ABACABA. Although there are a few differences, some people use the two terms, rondo and ritornello, interchangeably.

In rondo form, a principal theme (sometimes called the "refrain") alternates with one or more contrasting themes, generally called "episodes," but also occasionally referred to as "digressions" or "couplets." Possible patterns in the Classical period include: ABA, ABACA, or ABACABA. The number of themes can vary from piece to piece, and the recurring element is sometimes embellished and/or shortened in order to provide for variation.

The Baroque predecessor to the rondo was the ritornello. Ritornello form was used in the fast movements of baroque concertos. The entire orchestra (in Italian, tutti) plays the main ritornello theme, while soloists play the intervening episodes. While Rondo form is similar to ritornello form, it is different in that ritornello brings back the subject or main theme in fragments and in different keys, but the rondo brings back its theme complete and in the same key.

A common expansion of rondo form is to combine it with sonata form, to create the sonata rondo form. Here, the second theme acts in a similar way to the second theme group in sonata form by appearing first in a key other than the tonic and later being repeated in the tonic key. Unlike sonata form, thematic development does not need to occur except possibly in the coda.

Rondo as a character-type (as distinct from the form) refers to music that is fast and vivacious – normally Allegro. Many classical rondos feature music of a popular or folk character. They include Mozart's Rondo in A minor k511. Music that has been designated as "rondo" normally subscribes to both the form and character. On the other hand, there are many examples of slow and reflective works that are rondo in form but not in character.

A little-known vocal genre of the late eighteenth-century referred to at that time as the "rondò" is cast in two parts, slow-fast.

See also

• Sonata rondo form
• Rondeau (music) -- Medieval and Renaissance
• Rondo (novel)

External links

• Rondo and Ritornello Forms in Tonal Music
• Rondo form in traditional marches from Limoux' carnival
• http://www.karmina.cz/mp3/cd7/09.mp3
• Texts on Wikisource:
  • "Rondo". New International Encyclopedia. 1905. 
  • "Rondeau". Encyclopedia Americana. 1920.