Amy Winehouse will be performing material from her hit album, "Back to Black" via satellite at Grammy Awards.

Winehouse was denied a visa to enter the United States, according to a statement Thursday.

Winehouse, who is being treated for drug addiction, was nominated in six categories, said the statement from the singer's British publicists.

"Unfortunately, her application for a visa to enter the United States of America has been rejected at this time by the American Embassy in London," the statement said.

"Amy has been progressing well since entering a rehabilitation clinic two weeks ago and although disappointed with the decision, has accepted the ruling and will be concentrating on her recovery.

"Amy has been treated well and fairly by the embassy staff, and thanks every one for their support in trying to make this happen," the statement said. "There will of course be other opportunities and she very much looks forward to visiting America in the near future."

Winehouse entered the rehabilitation clinic January 24 after the leak of a home video that showed her smoking something in a glass pipe, just minutes after she is heard saying she had taken six tablets of the anti-anxiety drug Valium.

The Sun, Britain's best-selling daily tabloid newspaper, made the 19-minute video public, saying it had been shot days earlier at Winehouse's East London home.

Winehouse's parents have publicly expressed concern that their daughter is succumbing to the pressures of fame. 

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