In a video posted today on Buble's Instagram account, the Canadian crooner can be seen, joined by his son Noah and wife Luisana Lopilato, singing the hit song while accompanied by a pianist and full string orchestra backstage before his Brisbane, Australia, concert earlier this week.
While on his "MB World Tour," Buble has been treating his Instagram followers to a chance to vote on the song he uses as his warm-up before going on stage. In the last few weeks, he has posted videos of himself performing everything from Kylie Minogue's "Can't Get You Out Of My Head" to Maroon 5's "Moves Like Jagger."
For his latest video, Buble wrote, "Tonight this Academy Award winning song - originally sung beautifully by @idinamenzel - has been heavily requested."
He added, "Now with help from @lulopilatophotos @alanpchang #noah #bublestrings From #FROZEN!! "Let It Go" #mbworldtour #mbwarmup #Brisbane #Australia #disney."