Keys for the Kingdom is a fully-graded piano series designed especially with the Christian student in mind. Level C reviews Level B, explores staccato and legato, continues interval study, parallel motion, transposition, triads, major/minor, and dotted quarter notes, and culminates in full two-hand, chordal playing. Each lesson provides gradual progress, using familiar songs, hymns, and choruses all throughout. All method books have a music dictionary on the last page which corresponds to each level. For comparison, Keys for the Kingdom Level A could be studied alongside Keyboard Treasury, Volume 2, Hymns of the Faith for the Beginner Pianist, and more of 18 Progressive Hymntunes.