The Greatest Sia
Michael Buble's to headline Andre Agassi's Grand Slam for Children concert in Las Vegas next month.
The event raises money for children's education programmes.
Agassi says, "It's amazing what can be accomplished when people come together to change lives and make the world a better place for children. The 16th Grand Slam will bring together some of the world's greatest entertainers which inspires the generosity of people from Las Vegas and around the globe.This year's event will create a lasting memory and will enable us to give the tools of hope to the next generation."
Buble will be joined by Smokey Robinson, country star Martina MCBride, rock band Train and U.S. comedian Jimmy Kimmel
The evening will include a cocktail reception, gourmet dinner, live auction before the concert.