More recently, John Rutter wrote "Toccata in Seven," so called because of its time signature. Toccatas occasionally make appearances in works for full orchestra; a notable example is the final movement of the Eighth Symphony of Ralph Vaughan Williams. As for toccatas written for string instruments, the final movement of John Adams' Violin Concerto is entitled "Toccare," a possible reference to the origins of the word toccata; and the first movement ("Schnelle halbe") of Paul Hindemith's fifth "Kammermusik" (a viola concerto) is written as a toccata. Another contemporary composer who has written many toccatas is Emma Lou Diemer. In addition to several toccatas for organ, she has written three for piano (the one written in 1979 is frequently played), one for flute chorus, one for violin and piano, one for solo timpani and one for six mallet percussion. Russian jazz composer Nikolai Kapustin composed two toccatina; one as part of his Eight Concert Etudes, Op. 40 and another Opus 36. Evgeny Kissin wrote a jazz-inspired toccata as part of his "Four Piano Pieces", Op. 1.