(Willis).
The All-In-One version features material from the Step by Step method, the Write It Right theory exercises, and the Pieces to Play performance pieces; each supplement is pla.
This time-tested method is perfect for very young beginners and provides them with an opportunity to learn the piano in a unique and charming way, with each lesson presented in a logical order and at a manageable pace.
A comprehensive volume of this classic method that features lessons, solos, and theory exercises. (Willis)