Composed by Paul Hindemith in 1941. Hindemith (1895-1963) was a German composer, violist, violinist, teacher and conductor. Notable compositions include his song cycle Das Marienleben (1923) and opera Mathis der Maler (1938). Hindemith's most popular work, both on record and in the concert hall, is probably the Symphonic Metamorphosis of Themes by Carl Maria von Weber, written in 1943.
"Paul Hindemith is often associated with 'gebrauchmusik', or music intended for utilitarian purposes. To this end, he composed a sonata for most wind instruments, including less prevalent solo instruments such as tuba, alto horn and trombone. (A bass trombone sonata is noticeably missing from this collection.)
Hindemith's idea that music could be written for use in a variety of roles including films, plays, pedagogy, or performance by amateurs suggests that he would approve of trombonists commandeering duets originally written for bassoon and 'cello. Stücke für Fagott und Violoncello contains many open intervals such as fourths, fifths and octaves -- intervals that sound good when played by two trombones. Both parts are playable by tenor trombones with F-attachments, and the uppermost part stays in the staff for most of the time. These duets present trombone students the opportunity of working on music written by one of the great composers of the twentieth century. "
-- tromboneforum.org