



To make the soundtrack album stand out, Zimmer tried to focus on the Rodrigo y Gabriela tracks, as well as providing remixes that "fit the themes". The music was recorded at the Sony Scoring Stage in Culver City, California, conducted by Nick Glennie-Smith, with Whitacre's choir being done at Abbey Road Studios. Trumpetist Arturo Sandoval is featured throughout the score. Penélope Cruz's brother Eduardo Cruz wrote a tango song, and Geoff Zanelli contributed to many tracks. American composer Eric Whitacre helped with choir-based songs, most notably the mermaid theme, and brought with him along his soprano wife, Hila Plitmann. 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. With such a tight deadline, the whole score was recorded over four days in several different recording studios.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. Tied notes, long held notes in left hand. Time was so tight – only three weeks were available to write the music, so a whole flock of additional composers were brought in to work on the orchestral score and write short, additional music cues. However, Zimmer brought Klaus Badelt on board. The producers approached Hans Zimmer who was under exclusive contract to another film. The initial composer, Alan Silvestri, had a falling out with the director and left the project. In 2003, the score for “Pirates of the Caribbean” got put together a bit like a patchwork quilt.
