Watch the Glissandi online guitar lesson by Robbie Calvo from 50 R&B Licks You MUST Know
Another easy going smooth lick that really lets the notes work over the chord progression. The opening double stop is a major 6th that consists of the G# and B notes that are found in the E major chord.
I then play a double stop major 3rd which you can see comes from an E triad shape. The tricky part of this lick is to get the slides to and from notes to be smooth and relaxed. Make sue you are not gripping the guitar too hard. Let your hand glide through these ideas.