Theory is the theory workbook portion of theBastien Piano Basicscourse. Each book contains written work and some short pieces to reinforce the concepts presented inPiano. Games, puzzles, and colorful illustrations make learning fun! Your students will gain a better understanding of the music they are playing, and they will learn more easily when theory instruction is a regular part of their piano studies. Each page is carefully correlated withPiano, Performance,and Technic.