Michael Buble: 'White Christmas'

Michael Buble's been sharing some secrets behind his duet of 'White Christmas' with Shania Twain.

The pair 'teamed up' to re-work the yuletide classic for Michael's new 'Christmas' album but it wasn't a straightforward studio session.

"Shania was in Switzerland and I was at the Beringer Wine Vineyard in Napa Valley, (California)" explains Michael. "I went on my computer and connected via Skype and she connected to the studio and we dod the duet that way, talk about a virtual duet.

"I was really thrilled she wanted to do it." added the star.

Producer David Foster says Shania was in fine form, "She's back now and she sounds better than ever".

Take a look for yourself....