The Index to Printed Music (IPM) is the only electronic resource for finding individual pieces of music published in standard scholarly editions, such as composers' collected works, published in sets and series, organized by composer, geographical area, or by time or style period. With over 307,000 index records, the database contains detailed indexing including, but not limited to, composers, editors, poets, librettists, performing force (medium), format, genres, musical incipits (for identification), etc. A separate collections authority allows users to search for musical collections as well as individual musical compositions.