 Mozart was just a child when he wrote that. His Kirchhoff 39, Piano Concerto No. 2. He actually didn't write it. He arranged it for music by some of his contemporaries. He doesn't specify here exactly which ones, but Franz Schobert was one. Another composer named Haupach was another. Piano Concerto No. 2 by Mozart with Malcolm Bilson and the orchestra of the old Fairfield Academy, Thomas Crawford, the conductor.