Filmmakers and studios are still scrambling to complete their holiday releases, and not all of the songs you’ll be hearing about during awards season are set. But at least a dozen tunes are in contention for that all-important Oscar shortlist to be revealed December 16. Documentary songs can’t be counted out. This year’s slate includes Pharrell Williams’ “Letter To My Godfather” from “The Black Godfather” (written with Chad Hugo) and past winner Paul Williams (“Evergreen”), whose “Da Bronx” (written with Charles Fox) adorned the doc “The Bronx, USA.”