In general the book of piano accompaniments is a fine tool for the teacher and it is especially useful for accompanying those students whose level makes it difficult for them to follow the tempos of the CD or if they are just learning the notes. Also, some students might be somewhat disoriented by the instrumentation of some of the pieces on the CD. It is preferable to introduce them to the accompaniments for those pieces with the piano and then later introduce them to the recording after the st...