Intro to the Bass Guitar for the Visually ImpairedSample (Downloadable) This 4 CD equivalent series teaches you the Pop/Rock, Alternate Bass, Boogie and Waltz patterns and all the notes in First Position without using music or tab. It is loaded with demonstrations and back-up tracks to play along with. This course covers about 3 to 6 months of private lessons and is taught "by ear" using no music or written notation.