Check out this killer C chord complete with harmonics on top. This sounds impressive and you can use it as an intro tonight!
This trick gives a completely new and fresh sound to C major.
You can use this sequence of chords to set up a tune in E minor
or you can break it out anytime you hit C major harmony.
I remember a few years back at the Django in June festival showing this to Adrien Moignard who asked what it was as soon as he heard it for the first time. Adrien in my opinion is the best of his generation and up there with Bireli Lagrene.