This second edition, edited and substantially expanded by Christopher and Katherine Fisher, brings the volume into the 21st century, adding over 500 new or updated composer entries and nearly 1,000 new work entries to the volume, a testament to the renewed interest in piano duet playing. Entries are arranged alphabetically by composer and include both pedagogical and concert repertoire. The annotations and the grade-level indications provide piano teachers a wealth of instructional guidance. The book also contains updated appendices listing collections and duet works with voice and other instruments.