One. Five. One.
I'm not sure but I'll have an answer for you next Monday.
A: So who wants to know Why do *you* want to know Are you a cop
THAT'S RIGHT!!! YOU DON'T KNOW BECAUSE YOU WEREN'T THERE!!!
NONE! ITS A SECRET GOVERNMENT PLOT TO KEEP US IN THE DARK!"
None. The piano player can do that with his left hand.