Joseph Gordon-Levitt & Anne Hathaway Sing Together in French! (VIDEO)

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Taking some time from filming The Dark Knight Rises, Joseph Gordon-Levitt and his co-star Anne Hathaway made a surprise performance at JGL’s hitRECord Fall Formal event at the Orpheum Theatre in Los Angeles Monday night.

As reported on The Insider, the duo sang together — and to make it even more interesting — the song was in French! In the middle of the song, JGL invited a young woman, who had written the French tune, to the stage and the trio finished the tune as the crowd loudly cheered. Check out the video above!

The event was to benefit and raise awareness for HitRecord, the growing online collaborative community that shares kernels of stories, songs, films and other art and shapes, remixes and creates new, fuller works.

Meanwhile, the duo have been busy filming Christopher Nolan’s final Batman film, The Dark Knight Rises. Anne was spotted several times on set, showing off her black leather catsuit and high-tech goggles while riding the Batpod!