Grégoire Leprince-Ringuet and Louis Garrel in the bedroom window singing their way through the final scene of Les Chansons D'Amour.

…the 2007 musical French film by Christophe Honoré, made me so happy with its singing cast including three of my favorite young French actors, Ludivine Sagnier, Chiara Mastroianni, and, yes, especially Louis Garrel, whose songs from the soundtrack I have been listening to all day. (link)