Classical. The Sonata for Solo Flute (Wq. 132) was composed in 1747, although it was not published until 1763. This transcription is in the original key of A minor, where it lies perfectly in the bass trombone range while also playable on the tenor trombone with F attachment. The first two movements can be reversed to create a traditional fast-slow-fast pattern, or played as originally published. The length of the three-movement work is about 10 minutes and is appropriate for advanced performers. -the publisher