Par RASO JASON. Jason Raso's Soloing on Electric Bass: A Chord Tone Approach provides the next step following his first book for Mel Bay Publications, Improvising on Electric Bass. The primary focus of this second book is to help you develop a more melodic approach to solo bass playing. The author suggests avoiding root notes, concentrating instead on chord tones of a 3rd, 5th, and 7th as fertile …