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| Colombia's pop star Shakira performs during the Rock in Rio music festival in Arganda del Rey, on the outskirts of Madrid. (AP Photo/Victor R. Caivano) |
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| Jazz Soul singer Amy Winehouse, from England, performs during the Rock in Rio music festival in Arganda del Rey near Madrid on July 4, 2008. (AP Photo/Victor R. Caivano) |
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| British singer Amy Winehouse holds a glass as she performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 04, 2008. (AFP Photo/Pierre-Philippe Marcou) |
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| Colombian singer Shakira performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 04, 2008. (AFP Photo/Pierre-Philippe Marcou) |
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| Colombian pop singer Shakira performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid July 4, 2008. (Reuters/Juan Medina) |
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| Singer Jason Kay, of British band Jamiroquai performs during the Rock in Rio music festival in Arganda del Rey on the outskirts of Madrid on July 4, 2008. (AP Photo/Victor R. Caivano) |
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| British singer Amy Winehouse performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 04, 2008. (AFP Photo/Pierre-Philippe Marcou) |
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| British singer Amy Winehouse performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 4, 2008. (Reuters/Juan Medina) |
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| British singer Amy Winehouse performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 4, 2008. (AFP Photo/Pierre-Philippe Marcou) |
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| Colombian singer Shakira performs during the 'Rock in Rio' music festival in Arganda del Rey near Madrid on July 04, 2008. (AFP Photo/Pierre-Philippe Marcou) |
