Book four contains seven original compositions in a variety of styles which are all at Grade 4 level. Each piece contains suggestions for sounds and styles as well as programme notes to help you get the best out of the pieces and your instrument. The pieces have plenty of opportunities for you to use Fill-ins, intros and endings as well as sound changes. At the end of each book is a progress diary section for you, or your teacher, to log in written notes on your progress/helpful hints for each piece.