P.K. Subban's #CanadaCarols jingling through social media

Montreal Canadiens defenceman and amateur croonerP.K. Subban has thrown down the holiday gauntlet, challenging everyone from tiny totsto theprime minister to a pan-Canadian Jingle Bells sing-off.

"Hey Justin Trudeau! You have great hair, but can you sing Jingle Bells?" Subbansaid in his latest tweet from inside the Bell Centre.

• See the video on Twitter

It's all part of a Subban-frontedcampaign to create a country-wide social media singalongto brighten up the holidays for kids at the Montreal Children's Hospital and other Canadian pediatrichospitals.

• P.K. Subban donates $10M to Montreal Children's Hospital
• Watch the Montreal Canadiens perform Frozen's 'Let it Go'
• P.K. Subban surprises street hockey game in Westmount

Earlier this year, Subban's foundation pledged $10 million to the Montreal Children's, and the new hospital named its atrium in his honour.

However, the Habs' assistant captainpledged that his involvement would go beyond just the financial.

Subban's foundation teamed up with Air Canada and launched the #CanadaCarols call-out Tuesday, encouraging participants tomake a donation to the Children's Miracle Network, as well.

Prime Minister Justin Trudeau,who screened the new Star Wars movie yesterday with kids at theChildren's Hospital of Eastern Ontario,has not yet responded to Subban's challenge, but many others have, posting videos of themselvesbelting out the holiday favourite on Twitter and YouTube.

A compilation of some of the submissions will be screened for kids in several Canadian children'shospitals on Dec. 23.