No, it’s not a Grease remake; this scene comes to us from God Help The Girl, written and directed by Belle & Sebastian’s Stuart Murdoch.
We have to call out Murdoch, here, for a blatant double dip. “I’ll Have To Dance With Cassie” originally appeared on the album God Help The Girl, in 2009. It’s making the rounds again, now, on the God Help The Girl Original Motion Picture Soundtrack, which contains most of the tunes from that older record, plus some extras.
P.S. That’s Catherine Ireton’s voice you’re hearing, not Emily Browning’s.