To celebrate the launch of Guitar Hero: On Tour for Nintendo DS, Activision took to the streets to demonstrate the music-making game in the heart of London. Members of the public were invited to entertain passers-by at Covent Garden, London's home of busking, with renditions of rock hits by No Doubt, Ozzy Osbourne, Bloc Party, Jet and Maroon 5. Guitar Hero: On Tour is released in the UK today for Nintendo DS.