Misc: What is Camilla Parker Bowles' nickname?

Questions

In the Don Mclean song American Pie, who did he refer to as "the king"?

In the early nineties, this groups "Everybody Have Fun Tonight" hit number two on the charts?

In the mid seventies, which British artist changed personas once again & portrayed the 'Thin White Duke'?

In the mid seventies, who proved that it was possible for a petite woman to sing, play bass and wear leather?

In the sixties, what label did Mary Hopkins record for?