music: He sang to entertain the crowds at Wimbledon 1996, when rain interrupted play?

Questions

A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a?

After eating, a _______ regurgitates its food and then eats it again?

Which are the most used muscles in the body?

Which Australian animal rolls into a spiky ball when in danger?

Which author wrote the Belgariad Series?