What song is being played on the piano during the song Come What May in Moulin Rouge?

In "Come What May" from Moulin Rouge, the piano accompaniment features a melodic line that is primarily based on the song "Your Song" by Elton John. The intertwining of these melodies adds emotional depth to the duet performed by the characters Christian and Satine. The poignant piano arrangement enhances the romantic and passionate themes of the film.