Reaction on social media to singer Nelly Furtado's unconventional rendition of O Canada at the NBA All-Star Game on Sunday night was swift and harsh.

The B.C. songstress sang a slow, melodious version of the national anthem, accompanied by Native American flutist Tony Duncan on an instrument made by Saskatoon's Richard Dubé.

The performance drew big cheers and applause from the crowd at the Air Canada Centre.

But those watching at home and tweeting were less than impressed. CBC Toronto asked its Twitter followers what they thought, and the reactions were not kind.

<a href="https://twitter.com/CBCToronto">@CBCToronto</a> <a href="https://twitter.com/cbcsports">@cbcsports</a> Worst rendition ever! —@rebecca_shelley

<a href="https://twitter.com/CBCToronto">@CBCToronto</a> <a href="https://twitter.com/cbcsports">@cbcsports</a> How do you think I feel? Betrayed. Bewildered. —@aplusadvantage

It didn't take long before the singer was trending on Twitter for all the wrong reasons.

Is Nelly Furtado having a breakdown?<br>That's about the worst performance of the Canadian Anthem I've ever heard... —@RealMikeWilbon

Listening to Nelly Furtado sing "Oh Canada" @ <a href="https://twitter.com/hashtag/NBAAllStarTO?src=hash">#NBAAllStarTO</a> like: <a href="https://t.co/NHsWyfREyw">pic.twitter.com/NHsWyfREyw</a> —@UCDan

Nelly Furtado just butchered oh Canada, Drake should have just rapped it 😓 —@therealestasian

Nelly Furtado, make like a bird and only fly away. —@SNFaizalKhamisa

Though some folks still had some love for the I'm Like A Bird singer.

I love that <a href="https://twitter.com/NellyFurtado">@NellyFurtado</a> opted for simple accompaniment for her performance —@tresbanging

omg Nelly Furtado is trending yaaaaaaas slay girl —@Papaverhoeas

Before Furtado took the stage, Ne-Yo performed a low-key version of the U.S. national anthem. Later, Sting ran through a collection of his hit songs during the half-time show.