Amy Winehouse will not be performing at this year's Grammy Awards because her request for a visa has been turned down by the US Embassy in London, according to her publicist.
The Outside Organization, which counts the troubled retro-soul singer among its clients, said in a statement: "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."
The 24-year-old singer and her acclaimed 'Back to Black' album are nominated in six categories for the Grammy Awards in Los Angeles on Sunday.
Organisers of the music awards are now arranging for the singer to perform via satellite.
Since the album's US release last year, she has cancelled a slew of appearances amid reports of drug use.
