A Question about Rhapsody in Blue

I'm considering using a selection from Rhapsody in Blue for a film I'm working on, abut I'm having a hard time figuring out who owns the rights and how far they extend. Composed in 1924, it's a public domain piece almost everywhere in the world except the United States. It has some kind of copyright extension here, but I'm not sure if that applies to specific orchestrations or all variations generally.

Ideally, I'd like to arrange and record my own version of the piece. Does anyone have any experience or resources on the issue?