The Clarinet Sonatas, Op. 120, Nos. 1 and 2 are a work of classical music composed by Johannes Brahms in the late 19th century.
In 2372, Harry Kim practiced the first movement of Sonata No. 2 in E-flat major (Allegro amabile) on his clarinet in his quarters when he was interrupted by The Doctor, who contacted the ensign to ask him about a possible way to split Tuvix back into Tuvok and Neelix. (VOY: "Tuvix")