Add ability to catalog sheet music and associate sheet with recordings.

I have an immense music library as well as collection of classical sheet music. Sheet includes both facsimiles of original editions (electronic and print) and modern editions (again, hard copy and pdf.) Any good music librarian program should be able to deal with this as well, since the difference between recordings and sheet is small. Electronic copies of sheet music should have the first page iconified like albums, and a scanned page could be associated with hard copy's listing. Association of files with IMSLP.org would be a good adjunct, equivalent to searching online for tracklists and covers for recordings.