All three movements are colored especially prominently by horns. A rousing first movement in the key of B-flat major opens the symphony, followed by a more solemn, mournful movement in the relative key of G minor. A short, boisterous finale closes the work. The opening theme to the finale is borrowed from the finale to keyboard concerto by Johann Christian Bach whom Mozart had met the previous year in London. The same theme would also appear in a much later, more mature work of Mozart's: the Act 2 Finale of his 1786 opera buffa, Le nozze di Figaro, K. 492.