I recall that he said something like: "I don't play a lot of notes. I just try to play the right ones".

I think that if a guitarist plays a lot of notes real fast, it often sounds like he or she is rapidly searching for the right one. Instead, BB played the right note at the right time -- with the right lead-in (slide up or bend).

http://www.ethanhein.com/wp/2015/bb-king-gives-us-a-guitar-l...