Organ Skills TM. A Comprehensive Approach to Traditional Organ Teaching. This series of books presumes three to four years of keyboard study. This beginning improvisation book is a companion book to the First Organ Book (WL600053). Through the use of pentatonic hymns, Alberti bass figurations, and primary chords, the student is freed from strict adherence to the printed page. It presents major scales, tendency tones, cadences, and periodic melodic structure. 52 pages.