You’ll love this. Tommy Emmanuel a giving an Acoustic Blues Guitar lesson in the key of E, it’s called Stevie’s Blues, as in Stevie Ray Vaughan.
Please note: Since I first posted this article, unfortunately it has been removed because the original resource was breaching copyright. I was not aware of this when I posted, apologies t the publisher. I have decided to post an electric version of the tune.
The chord which he says he’s not overly sure of the name, I’d call a C13, however the Root not is not included, it’s implied. You might also call it an Em11b5 (flat 5) chord. Regardless of what you’d like to call it, it works, the notes are E, B Flat, D, A, all of which come out of a an E Blues scale.