Mendelssohn Op. 25 Concerto in G Minor for the Piano (NEW BOOK). Some shelf wear. Two-Piano Score. 2 Pianos, 4 Hands. Schirmer’s Library of Musical Classics Vol. 61. (RUTHARDT). G. Schirmer. Felix Mendelssohn-Bartholdy Concertos for the Piano with the Orchestral Accompaniments Arranged for a Second Piano by Adolf Ruthardt.