How many drummers does it take to screw in a light bulb?
None, we have machines to do that now.
How many bassists does it take to change a light bulb?
None, the keyboardist can do it with his left hand.
How many lead guitarists does it take to change a light bulb?
One — he holds the bulb and the world revolves around him.
How many lead singers does it take to change a light bulb?
Changes? Huh?