This vintage piano course by John W. Schaum is a must-have for any intermediate pianist. The green book, titled " piano Course (Pre A)," contains sheet music for the earliest pieces in the series. The book is in unit format and includes an ensemble of musicians to accompany you while you play. The music genre in this book is musicals, and the publisher is not specified. The book is perfect for anyone who wants to improve their piano skills, and it is a great addition to any vintage sheet music collection.