Rocker Elvis Costello is to end his run as a chat show host after just two seasons because his "side project" takes up too much of his time.

The Brit fronts music and interview show Spectacle and the second season of the critically-acclaimed series is just about to begin in America with chats and performances from Bono and Bruce Springsteen, among others.

And no matter how successful the show is, Costello insists he won't be back for a third series.

He says, "I wasn't looking for a career in TV. It's something I did as a side project from my real career."