You're welcome!

Originally Posted by: roberto.fronteddu

I am attempting to play the B7 as described in the Quick Change Blues guitar lesson.

Got it! Those chords are not the basis of the rest of the blues course! :) And they are not widely used compared to standard fingerings. And there is always a workaround.

I personally use them very seldomly. The most I use my thumb over the neck is to occasionally mute the low E.

Using a barre chord version as a substitute is a great solution. Well done!

Hope that helps!