-What are music catalogues
A catalogue is a list of works. It can be distinguished by composer or era. Catalogues can be helpful when you want to find out:
-What else a composer wrote in the same year
-The date of a composition
-The catalogue number of a composition
-Similar pieces from the same era
Sometimes catalogues will also tell you the location of an original manuscript. For a current location, online catalogues are most reliable; Older print versions may be outdated.