Gregg Goldstein With films from Lin-Manuel Miranda, Bill Murray, Todd Haynes, Leos Carax and others, the Cannes Film Festival, movie theaters and streamers are alive with the sound of music. “It might just be the shuffling of release dates as a result of the pandemic, but 2021 is shaping up to be an embarrassment of riches for fans of movie musicals,” Miranda says.And he should know.