The week in music - in pictures

Barack Obama chats with Alicia Keys after speaking at a World Aids Day event at George Washington University in Washington DC Photograph: Mandel Ngan/AFP/Getty Images

Nick Cave of Grinderman performs during the Homebake festival in Sydney Photograph: Mark Metcalfe/Getty Images

Billy Bragg plays an impromptu gig at the Occupy Bristol protest camp Photograph: SWNS.com

A Brazilian woman sings while playing her guitar in the historic centre of Salvador, north-east Brazil, during Dia do Samba. The date commemorates samba composer Ary Barroso, who visited Salvador for the first time on 2 December in 1938 Photograph: Yasuyoshi Chiba/AFP/Getty Images

Pixie Lott and Leona Lewis during a visit to support the Hopefield Animal Sanctuary in Brentwood, Essex Photograph: Chris Radburn/PA

Spencer Pollard, from the Californian band Trash Talk, at the Concorde2 in Brighton Photograph: Michael Burnell/Redferns

Bryan Ferry receives his Commander of the British Empire (CBE) medal from the Queen at Buckingham Palace Photograph: Anthony Devlin/PA

Saxophonist Colin Stetson performs at the 33rd Trans Musicales in Rennes, France Photograph: DAMIEN MEYER/AFP/Getty Images

The dress worn by Amy Winehouse on the cover of her Back to Black album has sold for more than £40,000 at auction Photograph: Yui Mok/PA

Paul Stanley of KISS signs a fan's leg at an event for the Archie Meets KISS Part 1 comic book in Los Angeles Photograph: Paul Archuleta/FilmMagic

Senegalese singer and Unicef goodwill ambassador Youssou N'Dour visits a food distribution centre at the Dadaab refugee camp in Kenya Photograph: Dai Kurokawa/AFP/Getty Images

Pianist James Rhodes performs Beethoven, Chopin and Bach on a Steinway grand piano at the Queen Elizabeth Hall in London's Southbank Centre. Rhodes is the first classical pianist to be signed by the rock-driven label Warner Bros
Photograph: Amy T Zielinski/Getty Images

Charlotte Church speaking at the Leveson inquiry. The singer claims she was offered £100,000 or 'favourable coverage' in News International titles if she sang at Rupert Murdoch's wedding to Wendi Deng Photograph: Reuters

South Korean pop group Super Junior pose on the red carpet after their arrival at the 2011 Mnet Asian Music Awards in Singapore Photograph: Terence Tan/AP

Lady Gaga attends the Grammy nominations concert in Los Angeles Photograph: Lester Cohen/WireImage

The Saturdays rehearse before the first night of their All Fired Up! tour at the Bournemouth International Centre Photograph: Dave J Hogan/Getty Images

A shot of the audience at Yo Gabba Gabba Live! in Los Angeles (Yo Gabba Gabba is an American children's television show) Photograph: Jerod Harris/WireImage

The Heptones, featuring Leroy Sibbles, Earl Morgan and Barry Llewellyn. Barry Llewellyn, who has died of pneumonia aged 63, was a longstanding member of the band, one of Jamaica's best-loved harmony groups. The Heptones had a series of influential hits during the 1960s and 70s, and although Llewellyn was chiefly employed as a harmony singer, he also co-wrote and sang lead on some landmark recordings, both for the group and as a solo artist

Read the full obituary here Photograph: GAB Archive/Redferns

Czech poet and artistic director of the dissident band the Plastic People of the Universe Ivan Jirous, who has died aged 67

Read the full obituary here Photograph: isifa/Getty Images