Camille was hired to perform 'Le Festin' after Giacchino listened to her music and realized she was perfect for the song as a result, the song is sung in French in all versions of the film. In addition to the score, Giacchino wrote the main theme song, ' Le Festin', about Remy and his wishes to be a chef. He also wrote a buddy theme for both Remy and Linguini that plays when they're together.
Giacchino had written two themes for Remy, one about his thief self and the other about his hopes and dreams.
Brad Bird re-teamed with Giacchino on the score for Ratatouille since they got along well during the scoring of The Incredibles. The Ratatouille soundtrack was composed by Michael Giacchino.
