WOW!!! I just ran across your site Garret and I must say it's Awesome. The way you break the songs down and explain them makes it easy to understand and learn. Thanks for all the hard work you put into these videos for us. William
The song is in the key of B, which is why I note the minor/major/mixolydian aspects of the solo. All over the key of B! The "E Shape Scale" or "A Shape Scale" is a way to refer to what scale shape I'm playing over. It's more accurate and I think more intuitive than saying "Shape 1" or something. It's based on the CAGED system which I have a write up about here: garretsguitarlessons.com/whats-point-caged/. Hope that helps!