(Guitar Educational). This is an essential guide for playing fingerstyle blues in open tunings, with and without a bottleneck slide. Acoustic Guitar magazine contributing writer Pete Madsen shares the secrets behind the styles of 12 great guitarists, both pre-war and post-war. Borrow from these masters to add authenticity to your own music. Guitarists featured include: Charley Patton, Elizabeth Cotten, Memphis Minnie, Son House, Skip James, Tampa...