1946 Michael Aaron Piano Course Grade Three Sheet Music Folio Book This is a vintage copy of the Michael Aaron Piano Course Grade Three sheet music book, published by Mills Music. Vintage instructional piano book. Grade Level: Three (intermediate). These are VINTAGE items. Scratches, flaws, rubs, yellowing and brittle pages, loose pages, etc are to be expected. Anything more than that will be noted in the description or seen in the photos. Please use the pictures for the best description of condition and ask all questions before purchase.