You really nailed the genre and era. That tremelo reverb guitar and the part that really makes it superb, is your excellent choice of chords. That puts it over the top.
Hi Herb
Thank you. The guitar runs through a pre-programmed Alesis Q2 echo unit, much like the guys did 60 yrs back.
Chords. I likes chords. The sequence owes a lot to Mr Floyd Jane whose use of m7b5 (the half dimished) chords was a light bulb moment for me. It really helps when working out a sequence for BB to do its magic.
Bests
Ian