Hello all. I was recently at a workshop led by Josh White Jr. in which he demonstrated Josh White Sr.'s style. One thing that caught my attention was using his left thumb, with nothing on it, as a slide. He hooked his thumb over the top of the neck and used the inner side of his thumb (i.e. the side facing his index finger). He commented that he found it quite painful since he didn't do it often enough to have a callous, and that it's a delicate matter touching the strings firmly enough not to mute them but softly enough not to fret them.

So I'm curious - who else uses this technique, Mudcatters or otherwise? What redeeming qualities does it have to make it worth the pain and finickiness?

Marion