Nothing says "Christmas" on 'Saturday Night Live' more than Michael Buble, a Sting-dressed Jimmy Fallon, and a slew of other big name talents making an album together.

For the follow-up to Buble's #1-selling 'Christmas' album, Justin Bieber (Fallon again), Lady Gaga, Taylor Swift and other stars brought together their "talents" for 'Christmas Duets.'

If Buble wasn't planning on doing a real duets album next year, he should at least consider bringing on a Christmas tree-covered Gaga.

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