Use our acoustic guitar chord charts - from basic open chords to ... need for a 12-bar blues improv in the key of A. A13 and E7#9 have an edgier sound and work in jazz just as well as blues.
Use our acoustic guitar chord charts - from basic open chords to the daddy of altered tunings and many ... The A7, D7 and E9 shapes shown here are all you need for a 12-bar blues improv in the key of ...