Alfred s Basic All-in-One Course Book 5 Lesson * Theory * Solo The All-in-One Course for Children takes all of the pages from Alfred s Basic Piano Library Lesson Books 1A 1B and 2 plus selected pages from Theory Recital and Fun Solo Books and combines them into part of a sequential five-book series. At the completion of Book 5 the student will be ready to continue into Level 3 of Alfred s Basic Piano Library or Alfred s Premier Piano Course.