Nelly Furtado is getting hammered for her rendition of Canada's national anthem "O Canada" at the NBA all-star game on February 14.

Furtado followed R&B singer Ne-Yo who performed a soulful rendition of "The Star-Spangled Banner." Nelly was accompanied by Native American flute player Tony Duncan.

The audience at the Air Canada Centre cheered after Furtado sang, but the Twitter community slammed the "Promiscuous" singer for her off-key rendition of O Canada prior to Sunday night's NBA All-Star Game in Toronto.

"On behalf of Canadians everywhere, we'd like to nominate Nelly Furtado's version of our great anthem as the worst play of the day," Ian Esplen tweeted.

"To be such a fine singer and give that performance of such a beautiful, beautiful song ... shocking," tweeted Michael Wilbon, co-host of ESPN's "Pardon the Interruption."

 "Oh no Nelly Furtado.... it's been sooo long since Promiscuous Girl .... and it shows ... #NBAAllStarTO" wrote one Twitter follower.

"Listening to Nelly Furtado sing the national anthem was like having hemorrhoids in your ears and a cat using them as a scratching post," wrote another.

Not all of the reactions were negative. Some people loved Furtado's performance of "O Canada."

"Loving @NellyFurtado's rendition of our national anthem!" the Canadian entertainment show "etalk" tweeted.

Nelly Kim has sold 20 million albums worldwide and more than 20 million singles. Furtado first gained fame with her debut album, Whoa, Nelly!, which spawned two successful singles, "I'm Like a Bird" and "Turn Off the Light." "I'm Like A Bird" won a 2001 Juno Award for Single of the Year and a 2002 Grammy Award for Best Female Pop Vocal Performance. In 2003, Furtado released Folklore, which produced three international singles: "Powerless (Say What You Want)", "Try", and "Força".

The Western Conference All-Stars beat their Eastern Conference counterparts 196-173.

You can watch Nelly Furtado sining the Canadian national anthem right here: