We only catch glimpses of it in the film, but here you can watch French actress Maïwenn Besco's entire green screen rendition of the Diva Dance Opera performance from The Fifth Element, in all its arm-flapping glory.
The voice you hear isn't Besco's (who is lip-syncing), but Albanian opera lyric soprano Inva Mula's. The aria she's performing is "Il Dolce Suono." Here's how the performance appeared in the film:
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