Browse the shelves for organ 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 6 - 19 Organ alone M 8 Sonatas M 10 Fugues with or without preludes M 180 - 181 One or more organs, two or more players M 182 - 186 Organ and one other instrument M 1005 Organ with full orchestra, concertos M 1006 Organ with second keyboard reduction of concertos, etc. M 1108 Organ with strings, concertos M 1109 Organ with second keyboard reduction of concertos, etc. for organ and strings MT 180 - 208 Studies, methods, technique, etc. MT 187 Pedal techniques