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Zimmer said they were picked for the soundtrack because the duo "play rock n' roll with flamenco guitars". The biggest collaborators were Mexican duo Rodrigo y Gabriela, whose music Zimmer met after being given their album by a friend. Many musicians worked with Zimmer in the score. Zimmer said that his music for the series is "making orchestras play rock 'n' roll" as he felt that "pirates were the rock 'n' rollers of many many years ago", and that he decided to add a "Spanish element" to On Stranger Tides.
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