Watch the 50 R&B Licks online guitar lesson by Robbie Calvo from 50 R&B Licks You MUST Know
Rhythm and blues is an eclectic mix of ideas, scales, arpeggios and techniques. All of the licks I've played here can be transposed into every other key unless they had an open string, so, if you've worked hard and learned some of these ideas you'll have ideas in every key.
Use the 50 licks here to get you started on the way to creating 50 licks of your own. I truly advocate the creative process and would suggest taking one of these backing tracks, look at the suggestions I made on what scale or arpeggios to use and then go about finding your own voice.