Watch the The Pinky online guitar lesson by Robbie Calvo from 50 R&B Licks You MUST Know
R&B is such an eclectic mix of musical styles that almost anything goes. In this example I am using the C blues scale. I called the lick Pinky because this lick will be easier if you employ the little guy for the first run.
Try to nail the pitch of the bend from F up to the G and really make the vibrato sing as the note decays.