Learn All Your Sax Scales in just 10 hours The Quickest and Most Efficient Way to Master Scale Fingerings on the Saxophone. Zero redundancy between related scales, and omitting all identical fingerings between registers allows for eliminating a substantial number of already mastered patterns from our daily practice routine which intelligently accelerates the value of our time spent practicing as we move through the keys around the circle. Simply the fastest way of internalizing the essential finger gestures of melodic production on sax into pure subconscious reflex. Also Great for Musicians who want to double on Sax