By Cynthia Richards
This book contains piano accompaniments for the solo pieces in the original Book 4 and can be used with the original (not the revised) Violin, Viola and/or Cello books. It can also be used to accompany the three instruments in small ensembles. Additional accompaniments have been provided for the unique songs which were added to accommodate technical aspects of the cello.
See the blog post entitled Innovation, Revision and a Clearance Sale for an explanation of why and how Books 4 and 5 have been revised.