Performance Party books also correlate with each Piano Party book. They provide additional music for the student to play, and help to secure the skills and musical foundation established in the related Piano Party book. By including Music Flashcards for enhanced memory and Practice Party for daily teacher-student-parent communication, plus appropriate supplementary solo sheets and collections (see pages 32-47), you can provide a complete and balanced curriculum that perfectly fits the capability and the imagination of the very young pianist. Book D expands reading to positions in D, A, E (Group 2); D-flat, A-flat, E-flat (Group 3); and G-flat, B-flat, and B (Group 4). Flats and sharps, more dynamic markings, and key signatures are presented. As in Book C, students are asked to write the counts in every piece indicated by the pencil icon.