Complex sentence: The film ends with Héléna kneeling beside Fred, who is lying on his back, looking content and singing along to the band, who are playing and being applauded by the audience in the background.
Split into simpler sentences: The film ends with Héléna kneeling beside Fred, who is lying on his back, looking content and singing along with the band. They are playing and being applauded by the audience in the background.