The week in music - in pictures

Florence Welch of Florence and the Machine performs at the Gibson Amphitheatre in Universal City, California Photograph: Jeff Kravitz/FilmMagic

The Beach Boys in 1966. The band have announced that they are reuniting to celebrate the 50th anniversary of the band's inception Photograph: Michael Ochs Archives/Redferns

Britney Spears and Jason Trawick celebrating their engagement at Planet Hollywood Resort & Casino in Las Vegas Photograph: Denise Truscello/WireImage

Katy B photographed this week for the Observer's Faces of the Year Photograph: Andy Hall for the Observer

Lexxi Foxx, Stix Zadinia, Michael Starr and Satchel of Steel Panther on stage at Wembley Arena Photograph: Neil Lupin/Redferns

Camilla, Duchess of Cornwall, feeds Lady Gaga the mascot of the Shetland Pony Club at the London International Horse Show Photograph: Steve Parsons/PA

John Taylor and Simon Le Bon of Duran Duran performing at the O2 Arena in London Photograph: Christie Goodwin/Redferns

Justin Bieber shows off his keepie-uppie skills to Chelsea footballers Frank Lampard and Fernando Torres, and Radio 1 DJ Reggie Yates at Stamford Bridge Photograph: Darren Walsh/Chelsea FC via Getty Images

Ivan Moody of Five Finger Death Punch performs at the Compuware Arena in Plymouth, Michigan Photograph: Scott Legato/Getty Images

Etta James poses for a portrait circa 1962. Doctors treating the blues singer, who has battled with leukemia over the past year, have now described her condition as incurable Photograph: Michael Ochs Archives/Getty Images

Madonna during a tour in Belgrade, Serbia. NBC announced that the singer-actress-directer will perform at half-time during the Super Bowl in February in a show 'imagined' by Cirque du Soleil Photograph: Simone Cecchetti/Corbis

Little Mix and and their mentor Tulisa celebrate winning the X Factor. Little Mix are the first girl group to win the competition Photograph: Ken McKay/TalkbackThames/Rex Features

An Indonesian punk gestures before being arrested by police in Banda Aceh. A total of 65 arrested punks were sent for 'moral education' at a police school

See more images here Photograph: Hotli Simanjuntak/EPA

Una Healy of The Saturdays performing at Wembley Arena Photograph: Rex Features/Rex Features

The American singer and songwriter Dobie Gray, who has died of cancer aged 71, was best known for his 1973 hit Drift Away, which sold more than a million copies and represented a perfect synthesis of soul, country and pop elements. He was held in special affection, however, by Britain's legion of Northern Soul fans, for whom his 1960s recordings provided a series of anthems

Read the full obituary here Photograph: Steve Morley/Redferns

Country musician Billie Jo Spears who has died aged 74. Spears's 1975 recording of Blanket on the Ground, a wife's warm invitation to her husband to blow on old flames was a top 10 hit in Britain

Read the full obituary here Photograph: Michael Ochs Archives