Michael is currently on his 'MB World Tour' and was joined by Noah, his wife Luisana Lopilato, an electric piano and pianist and a string orchestra while backstage in Australia last night.
The Canadian singer was practicing the hit song 'Let It Go', which is from the Disney film Frozen and was originally sung by Idina Menzel - the voice of Elsa.
Clutching Noah in his arms, and with Luisana swaying alongside them, Michael can be seen in a short Instagram video belting out the ballad.
Little Noah is even waving his arms around in the air. TOO. CUTE.
Posting the video online, Michael commented: "Tonight this Academy Award winning song - originally sung beautifully by @idinamenzel - has been heavily requested.
"Now with help from @lulopilatophotos @alanpchang #noah #bublestrings From #FROZEN!! "Let It Go" #mbworldtour #mbwarmup #Brisbane #Australia #disney."
Michael has been on the road pretty much since Luisana gave birth to Noah last August.
But luckily, Luisana and Noah have been able to accompany Michael for the best part, meaning the tot has already visited countries such as Berlin, Milan and Barcelona to name a few!
What's your favourite Michael Bublé song? Tell us below, as the best comment from across the website each week wins £50.