I hope I'm not overdoing discussing one artist, stomping on this thread. But, I just came across this about Roy Buchanon. All of it very interesting. But if you watch the part where he discusses how he uses the tone and volume knobs in his playing, it was especially so.
ROY BUCHANAN - Telly Talk [1982] : https://www.youtube.com/watch?v=FE7ke9xUuOQ&t=999s
[u]Guitars:[/u] 2014 PRS Santana, 2013 PRS Paul's, 2009 PRS Hollowbody, 1972 Gibson ES-325, 2012 Fender Strat American Standard, 2012 Yamaha Pacifica, Martin M-36, Martin 000-15M, Seagull S6 Classic[br][u]Amps:[/u] Fender Blues Junior III, Boss Eband JS-10, Line 6 POD 500X, Quilter Microblock 45