Browse the shelves for piano repertoire A large amount of repertoire can be found on the 4th floor of the Waterloo campus library in the following call number ranges. Call Numbers Description M 20-32 Original music for the piano M 22 Collections by one composer M 23 Sonatas by one composer M 27 Theme and variations, one composer M 200-213 One piano, three, or more hands M 214-216 Two or more pianos M 1010 Piano concertos, etc. - full scores M 1011 Piano with piano reduction of orchestral part M 1110 Piano with string orchestra, concertos, etc. M 1111 Piano + pno. reduction of the string orchestra score MT 220-258 Studies, methods, technique, etc.