For those fellow bottleneckers that experience shoulder pain when using vibrato, this will hopefully provide the solution! Or, maybe youve got a way to play pain-free vibrato that doesnt use thumb-planting…thats all good, but definitely this method is very comfortable while permitting an optimal range of vibrato speeds. See if it works for you! Check out my blog for more Delta Blues stuff! www.deltabluesguy.blogspot.ca Open G Spanish Tuning (low to high): DGDGBD