The classical composer Leopold Koželuch left around 400 compositions. Among these there are about thirty symphonies, twenty-two piano concertos, including a concerto for piano four-hands, arguably one of the best examples of this rare genre, two clarinet concertos, twenty-four violin sonatas, sixty-three piano trios, six string quartets, two oratorios (one of which, Moses in Ägypten, has recently been produced and recorded), nine cantatas and various liturgical works. Among his music there are also operas and works for ballet, which—with the exception of one opera —have yet to be heard in recent years. Numerous arrangements by him of Scottish songs for the Edinburgh collector George Thomson were popular, and some of these have also been recorded.