There is a style of electric blues guitar. It is one of chords more than stinging single notes. It’s about trembling tremolo, and monotonous vibrato, of really seriously bent major-and-minor blues notes, that really conjure an evocative mood. Mood is a big thing for me. John Fog-arty did a riff on the tremolo style – a lot of people call it bawling guitar - that came to stand for a sort of swamp sound. Where did it come from? Fog-arty worked in the warehouse of Arhoolie records, I believe. And had access to Roebucks Staples records , and some others, who were creating this music within a music, and Fog-arty was taken by it, and took it out in those days on the Fillmore rock circuit. It was described as a swamp thing. This style, chord-heavy, is out of the margins of the most classic blues guitar, but quite significant. None was greater on the bawling blues guitar sound than Roebuck Staples, center, leader and progenitor of the Staples Singers. He early on got an electric guitar, ...