Put it at the very start of a Christmas scene, before any dialogue or music, then follow the arrival with Hallelujah for the North Pole reveal and Clapping once the characters step onto the platform.
关于此声音
This clip is the steam whistle of the magical train in The Polar Express, a long, deep call that rises and fades over a few seconds. It feels warm, nostalgic and a little mysterious, like waiting for something wonderful on a snowy Christmas Eve. The sound comes from the 2004 animated film, based on Chris Van Allsburg's picture book, about a boy travelling to the North Pole.