Original songs for movies is a world unto itself, as we continue to discover. This year’s awards-worthy movie songs were covered in several Variety stories spread over the past two months: discovering that Taylor Swift and Andrew Lloyd Webber had collaborated on a new song for Cats, Oct. 24; our early guesses as to who might make the final Oscar and Golden Globe lists, published Oct. 29; an overview of this year’s Disney movie songs, several likely to make those final lists, on Dec. 4; and interviewing Diane Warren, Pharrell Williams, Cynthia Erivo and Regina Spektor about their current work, Dec. 6.