The soundtrack for each Cirque show is developed by members of Cirque du Soleil's creative team. The team is led by a composer, such as Rene Dupere, who wrote the Grammy-nominated soundtrack to Alegria as well as several other Cirque shows.
Alegria's soundtrack, like all Cirque du Soleil soundtracks, is an eclectic mix of music styles. This mix of music establishes the changing mood and theme for the audience.
The soundtrack also serves as a cue to the performers, guiding them through the show and each act. To ensure that the musicians follow the pace of the performers, all Cirque shows use live music. In the event an act fails, the musicians adjust tempo and volume and improvise if necessary.
The soundtracks to all Cirque du Soleil shows feature music which uses "phonetic sentence strings" instead of actual words. According to Parisien, "use of real words blocks the possibility of imagination." Parisien believes that this signature lack of a language, like the show's open-ended theme, leaves room for audience interpretation and lends Cirque a universal appeal.