arrival and problems with her voice, the crowd warmed to her. In addition to her own material she performed two Specials covers. Winehouse performed at Nelson Mandela's 90th Birthday Party concert at London's Hyde Park on 27 June 2008, and the next day at the Glastonbury Festival. On 12 July, at the Oxegen Festival in Ireland she performed a well-received 50-minute set which was followed the next day by a 14-song set at T in the Park. On 16 August she played at the Staffordshire leg of the V Festival, and the following day played the Chelmsford leg of the festival. Organisers said that Winehouse attracted the biggest crowds of the festival. Audience reaction was reported as mixed. On 6 September, she was Bestival's Saturday headliner, where her performance was described as polished—terminated by a curfew as the show running overdue, after Winehouse started an hour late—and her storming off stage. A clip of Winehouse's music was included in the "Roots and Influences" area that looked at connections between different artists at the Rock and Roll Hall of Fame Annex NYC, which opened in December 2008. One thread started with Billie Holiday, continued with Aretha Franklin and Mary J. Blige, and then finished with Winehouse. Back to Black was the world's seventh-biggest-selling album of 2008. The album's sales meant that the market performance of Universal Music's recorded music division did not drop to levels experienced by the overall music market. 2009–2011: Final projects before death In a 2009 poll of U.S. residents conducted for VisitBritain by Harris Interactive, one-fifth of the participants indicated they had listened to Winehouse's music during the previous year. She performed with Rhythms del Mundo on their cover of the Sam Cooke song, "Cupid", for an Artists Project Earth benefit album released in July that year. Winehouse and Ronson contributed a cover of Lesley Gore's "It's My Party" to the Quincy Jones tribute album Q Soul Bossa Nostra, released in November 2010. She had agreed to form a group with Questlove of the Roots but her problems obtaining a visa delayed their working together. Salaam Remi had already created some material with Winehouse as part of the project. According to The Times, Universal Music pressed her for new material in 2008, but as of 2 September that year she had not been near a recording studio. In late October, Winehouse's spokesman was quoted as saying that