Concerto for piano, violin, cello and orchestra in Cmajor, op. 56 "Triple concerto" Concerto for piano, violin, cello and orchestra in C major, op. 56 : Triple concerto Concerto for piano, violin, violoncello and orchestra in C major, op. 56 "Triple concerto" Concerto for piano, violin, violoncello and orchestra in C major op. 56 "triple concerto" Concerto for Piano, Violin, Cello and Orchestra in C major, oop. 56, "Triple Concerto" 1-3. Concerto for piano, violin, violoncello and orchestra in C major, op. 56 "Triple concerto" Concerto for Piano,Violin,Cello and Orchestra in C major,op.56 'Triple Concerto' Concerto for Piano, Violin, Violoncello and Orchestra in C major, op.56 "Triple Concerto" Concerto for Piano,Violin,Cello and Orchestra in C major,Op.56 'Triple Concerto' Concerto for piano, violin, cello and orchestra in C major, op. 56 / Ludwig van Beethoven