I am learning to play this but I have a question which is bugging me. If you watch the beginning of this tuition video, the person is teaching you how to play a chord. He is telling you to play certain notes but add an extra note. Technically you play E and C then F and C and finally E G C but the man in this video tells you to play an extra note of B flat. So when I played it like that in my piano lesson, my teacher said you do not play it like that and you just play the white notes. If that is what she is saying then why does this video say hit the extra note? I want to query this with my teacher but I do not have my lesson until next week and this is really bugging me.