The week in music - in pictures

Katy Perry performs on the X Factor results show. Katy is quoted by the Sun as saying: 'I love coming to London so I can have baked beans on toast. They do bloat me and I'm afraid I'm going to go off like a firework, but I do love them' Photograph: Ken McKay/TalkbackThames/Rex Features Musician Masohd Al-Baser entertains anti-Gaddafi fighters on the front line in Sirte, Libya Photograph: Esam Omran Al-Fetori/Reuters The Stone Roses pose for photographers in London. The band announced they have reformed for two Manchester gigs to be followed by a world tour next year. The Manchester dates sold out in 14 minutes despite tickets costing £55 Photograph: Dave J Hogan/Getty Images Argentinian economy minister and vice-presidential candidate Amado Boudou, plays the guitar in San Rafael, Mendoza province Photograph: AFP/Getty Images UB40 photographed in Birmingham in 1981. Four members of the reggae outfit have been declared bankrupt despite having sold more than 70m records Photograph: Janette Beckman/Getty Images Anna Calvi performing in Warsaw, Poland Photograph: Pawel Supernak/EPA Leonard Cohen cries during a tribute in Gijon, northern Spain. Cohen will be awarded the 2011 Prince of Asturias award for literature at a traditional ceremony on Friday in the Asturian capital Photograph: ELOY ALONSO/REUTERS Hungarian Composer Franz Liszt who was born 200 years ago this week Photograph: W. and D. Downey/Getty Images Freddie Mercury photographed in 1984. Freddie Mercury received the Founders award at the Asian awards 2011 in London to mark the 20th anniversary of his death and celebrate his musical legacy. He was born in Zanzibar and educated in Bombay Photograph: Ian Dickson/Rex Features Musicians dressed in traditional Bavarian clothes play in front of the Alps Photograph: Christof Stache/AFP/Getty Images Morrissey performing in New York in 2007. Britain's most senior libel judge is considering whether to grant Morrissey a high court trial before a jury over an NME magazine interview he claims portrayed him as a 'racist and a blatant hypocrite' Photograph: Amanda Schwab/Rex Features Bernard Sumner of New Order performs in Paris. Read Luke Bainbridge's review of the gig here Photograph: Kristy Sparow/Redferns Paris Jackson, daughter of singer Michael Jackson, takes a photo of R&B artist Chris Brown performing on his F.A.M.E. tour in Los Angeles Photograph: Danny Moloshok/Reuters Alice Cooper unleashes a pyrotechnical extravaganza at a concert in Chemnitz, Germany Photograph: HENDRIK SCHMIDT/EPA Bette Midler wearing her famous mermaid stage costume as the character Delores Delago. The Mermaid costume and the Valentino gown she wore to the 1992 Oscars and a collection of headdresses are all going up for auction in November Photograph: Reuters Stevie Wonder and Ledisi perform during the Martin Luther King Jr memorial dedication in Washington DC Photograph: Paul Morigi/WireImage Edmundo Ros, the man who kept British feet tapping through the war years and during the period of austerity that followed, has died at his home in Spain at the age of 100. Ros was the leading Latin American musician and vocalist of his era and his charisma and infectious rhythms introduced the rumba sound to Britain's dance halls. Read more about him here Photograph: Keystone/Getty Images