Written for diatonic and chromatic harmonica this is one of the hottest-selling blues harp books available. As usual Phil D uncan's instructions are thorough and easy to understand. One of the best books in this popular harmonica style. The blues te chnique of playing "cross-harp" is clearly presented. Chords and melody bending tones and vibrato are but a few skills that are taught. No previous musical knowledge is necessary.