The Konzertstück started out as a third piano concerto; however, because it is in one continuous movement (in four sections) and has an explicit program, Weber decided not to name it “concerto” but “Konzertstück” (Concert Piece). The score calls for flutes, oboes, clarinets, bassoons, horns, and trumpets in pairs, bass trombone, timpani, and strings. It takes about 17 minutes to perform and a brilliant technique is called for.
Carl Maria von Weber: Konzertstück in F minor, for Piano and Orchestra, Op. 79 Alfred Brendel, piano London Symphony Orchestra Claudio Abbado, conducting