I should mentioned that Hilary Ann Feldman is one of the most organized performers I know. For example when we were at Perry-Mansfield she had most of her music in 3 or 4 keys.
Two organizing ideas from Hilary that we lesser mortals might take advantage of:
1. Hilary photocopies the cover and index of all her music books and keeps that info in a binder. That way when she’s looking for a song, especially from a fake book, she has a central place to look without having to go through all her books.
2. Her father built her the shelf unit above. The shelves are the correct height to store music books and the file drawers are wide enough to fit folios of sheet music.