THE "STANK FACE" or "SOUR FACE"
I know this seems crazy...but seriously. Make the face above and listen to the jam track below. Bob your head to the beat. There's just something magical about it. It makes the music look and sound better. You'll catch musicians making this face when playing some awesome blues licks!
TIPS: Pretend that you stepped on a dog turd...now make that face. THAT'S THE ONE!!