text: A piano concerto by this composer features a middle Larghetto movement in G major and does not employ any strings.
full_question: A piano concerto by this composer features a middle Larghetto movement in G major and does not employ any strings. This composer's unusually scored works include a double concerto for piano and violin in G Major, as well as a mandolin concerto for Bartholomeo Bortolazzi. His B minor piano concerto is the best known of his eight piano concerti, and heavily influenced the piano concerti of Chopin. This composer re-arranged his own D minor piano septet for piano, violin, viola, cello, and double bass, a lineup that inspired the instrumentation of Franz Schubert's Trout Quintet. A concerto by this composer is usually played today in the key of E flat instead of its original E, and, like Joseph Haydn's work of the same type, was composed for Anton Weidinger. For 10 points, name this Austrian pupil of Mozart who composed a still-performed trumpet concerto and wrote a "Complete Theoretical and Practical" manual for playing the piano.
first_sentence: A piano concerto by this composer features a middle Larghetto movement in G major and does not employ any strings.
raw_answer: Johann Nepomuk Hummel