The student can have there own fillable chord progress book. Simply put: as the student learns new named chord, he or she can enter them in the corresponding chord charts in Part 1. In Part 2 the student can enter appropriate chords for each particular key. Sometimes it's really handy to know which chords form the basis of any key to play almost any song. The songwriter always write a particular song in a certain key and sometimes aswell takes the song into a higher or lower key to gain a different emotion. Presented in the book are both easy to find chords and also keys.