(It.) - Generally, an instrumental composition in which one section recurs at certain times. By the 18th century, a standard pattern had developed as A B A C A D A, etc. appearing as the last movement of a sonata or concerto. The recurring theme A is called the rondo theme and B C D, etc. represent the contrasting sections known as episodes. However, A can be varied. The combination of sonata form and rondo resulted in sonata rondo which was much used by Mozart and Beethoven.?