Exploring Modal Jazz. This great book / CD pack is an effective and fun way to improve your vocal technique and internalise the basic scales used in jazz.
Discover an alternative approach to Jazz improvisation to the usual endless scalic runs, by taking advantage of the Guitar's triad possibilities with this special tutorial.
Rich Del Grosso. An excellent mandolin method that features a play-along CD, duets, great playable tunes in several styles in standard notation and tablature. (Lehrmaterial) (Lesboek)
For intermediate-level players. A follow-up to Introduction To Acoustic Blues. Covers 5 different keys and positions and incorporates slide or bottleneck playing.