Michael Bublé performs spectacular 'White Christmas' duet with Bing Crosby

Thanks to the magic of technology, two crooners born generations apart were able to share a stage for a very special performance of 'White Christmas'.

Singing with the late Bing Crosby as part of his 2012 TV special Home for the Holidays, Michael Bublé explains to viewers what the festive ballad means to him and his family.

The scene that Bublé appears in originally featured Crosby's wife Kathryn Crosby.

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Bing's 1942 recording of 'White Christmas' is the world's best-selling single.

The song has amassed sales in excess of 50 million copies worldwide and has achieved over 1.8 billion streams since streaming began.