Oh my goodness..Transformation during a song..You look like you did not miss a beat either!
I played either Bass, guitar or piano with most of my students. It it a real education for them to do ensemble work, as not only do you have to play your OWN part, you have to be aware and coordinated with the OTHER player as well.
So I was onstage emceeing, and performing with the kids for over two hours.