The Classical Piano Sheet Music Series. The Classical Piano Sheet Music Series includes compilations of intermediate level pieces, with an easy-to-use coil binding so the music lays flat, ensuring smooth page turns. This edition features: Adagio in C Major for Glass Harmonica, K. 356 (617a) · Air in A-flat Major, K. Anh. 109b, No. 8 (15ff) · Allegro in B-flat Major, K.3 · Allegro in F Major, K. 1c…