Michael Bublé has teamed up for a Christmas duet with his "childhood hero" Kermit the Frog.
The Canadian singer introduced his duet partner as part of Michael Bublé's Christmas in the City.
In a video posted online, he told his audience: "Ladies and Gentlemen, I am so lucky to be joined tonight by someone I've admired my whole life.
"Please welcome the man, no wait, let's get the species right. The frog, the myth, the legend, Kermit the Frog."
Kermit, dressed in a silver waistcoat and red tie, appeared to rapturous applause and declared: "Merry Christmas everyone and Merry Christmas Michael."
"Merry Christmas Kermit...isn't it great to be back in New York City?" the singer asked.
Kermit replied: "It sure is, it gives me a chance to do some Christmas shopping for Ms Piggy... what do you get for someone that wants everything?"
Recalling his childhood, the Grammy Award winner said: "I actually met you when I was a kid and you look just as young now as you did all the way back then, what's your secret?"
"Oh, that's easy, I soak in pond scum every day," replied Kermit.
He continued: "You have no idea what it's like to be asked to sing the same song, year after year."
Bublé looked at the camera before replying: "I might know what that's like Kermit..."
The pair then performed a rendition of Jingle Bells.
As part of his Christmas in the City series, Bublé also duetted with British actress and Ted Lasso star Hannah Waddingham, and American singer-songwriter Leon Bridges.
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Source: Press Association