None. The piano player can do that with his left hand.
Put it in a square cup
Twelve. Three to Physically Change the Bulb, Three to Talk About How Complicated it Was and Six to Call themselves Electricians.
69
Two. One to screw it in and one to take credit for it.
He is alright, but one sided!
None the keyboardist can do it with his left hand.
One. Five. One.