John Mayer

Who isn't cancelling their concerts nowadays? That's the real question. From Rihanna's flu, to Adele's surgery, and now Keith Urban's throat surgery? It's only a matter of time before Britney Spears pulls a hamstring from a lap dance gone wrong and has to cancel the rest of her Femme Fatale tour.

Keith Urban, country crooner and husband to actress Nicole Kidman, is undergoing outpatient surgery to have a polyp on his vocal cords removed.

He has had to cancel all performances from now until 2012 to give himself proper vocal rest. However, from now until he has the surgery he will still do any one-song appearances. One-song appearances? I can only assume that means mall-shows and bar mitzvahs.

“The surgery, an out-patient procedure, while minor, will require complete voice rest followed by an undetermined period of recuperation,” says a rep for the singer.