The week in music - in pictures

Gary Barlow sits at the piano in the Music Room of Buckingham Palace. The singer will help organise this year's Diamond Jubilee concert Photograph: John Stillwell/PA Sitar player Anoushka Shankar performs in Bangalore, India Photograph: Jagadeesh Nv/EPA Lou Rhodes of Lamb performing in Warsaw, Poland Photograph: JACEK TURCZYK/EPA Paul McCartney at the unveiling of his star on the Hollywood Walk of Fame in Los Angeles Photograph: Frederic J. Brown/AFP/Getty Images Katy Perry arrives at the 2012 MusiCares Person of the Year Tribute to Paul McCartney in Los Angeles Photograph: Kevin Winter/Getty Images For The Recording A Paul McCartney performs with Dave Grohl of Foo Fighters and Joe Walsh during the 2012 MusiCares Person of the Year tribute Photograph: Mario Anzuoni/Reuters MIA's controversial finger gesture during the Super Bowl Halftime Show in Indianapolis Photograph: Christopher Polk/Getty Images Chrysta Bell performs songs from her new album, a collaboration with David Lynch, at Bush Hall in London Photograph: Christie Goodwin/Redferns Kazakh Singers dressed in traditional costume perform at the bottom of the Rosa Khutor Alpine Resort in the western Caucasian mountains Photograph: Wolfgang Rattay/REUTERS Samantha Urbani of Brooklyn band Friends performs at The Lexington in London Photograph: Kate Booker/Redferns Marika Bajur sings 'Kuriu' in Sochi, Russia, one of a set of images that has won first prize in the arts and entertainment category of the 2012 World Press Photo contest Photograph: Rob Hornstra/AP Jay-Z performs at Carnegie Hall in New York at a benefit for the United Way of New York City and the Shawn Carter Foundation Photograph: Kevin Mazur/WireImage Beyonce Knowles holds daughter Blue Ivy in the first published photos of her child Photograph: Ed Burke for beyonce.com/AP Brent Hinds of Mastodon performing at Manchester Academy Photograph: Gary Wolstenholme/Redferns Curtis Jackson, better known as 50 Cent, visits orphaned school children in Kibera, the biggest slum in Kenya Photograph: Rose Ogola /World Food Programme Lana Del Rey performing at Amoeba Music in Los Angeles, California Photograph: Kevin Winter/Getty Images Photograph: Kevin Winter/Action images The Ting Tings perform at US Glamour's March party at The Box in New York City Photograph: Rabbani and Solimene Photography/WireImage for Glamour Magazine