Derek Trucks is the undisputed king of modern slide guitar. Part of his style that sets him apart, is his convincingly vocal-like lines. In the video below, I am mimicking Etta James' vocal on the song "Trust In Me". Learning vocal lines will improve your ear, reaction time, phrasing, and general improvising ability.
If you are interested in learning more licks like this in Open-E and on slide, you can contact me at email@example.com to set up a lesson. If you would like to support my efforts in form of donation my Paypal is firstname.lastname@example.org and my Venmo is Jarred-Garneau