Amy Winehouse will perform live via satellite at this year's Grammy Awards ceremony despite a late change of heart over her US visa application.
Winehouse's nominations include record, album and song of the year
The awarding of her visa comes after her initial application was rejected by American officials.
Her performance in a studio in the early hours of Monday in London will be beamed into the show in Los Angeles.
Her agents said she would not travel to the Grammys "due to the logistics involved and timing complications".
Ms Winehouse is leaving the rehab clinic where she has been treated for two weeks to prepare for the performance.
She will also make any acceptance speeches by satellite if she wins any of the six awards she is nominated for.
A statement by the Outside Organisation agency said: "Following further discussions involving the US Embassy in London and officials in the United States, Amy Winehouse has been granted a visa to enter the United States of America.
"Unfortunately, due to the logistics involved and timing complications, Amy will not be travelling to the US to perform at the Grammys in person."
The delay in granting the visa followed a series high-profile drug problems.
She was fined for cannabis possession in Norway last year and has been questioned by London police in connection with a video apparently showing her smoking a crack cocaine pipe.
"I'm raring to go and really excited to be performing at my first Grammy Awards," the star said in a statement.
"I'd like to thank everyone for their support over the last couple of weeks. I'm really sorry I can't be there but I appreciate that I'm being given a second chance via satellite."
AMY WINEHOUSE IN THE US
Nominated for six Grammy Awards
Sold 1.5 million copies of her album Back To Black
Album reached number six in Billboard charts
Cancelled North American tour last August
Also cancelled appearance at MTV Music Video Awards 2007
Her spokesman said an invited audience of friends and family would be at the studio, but he did not know what she would sing.
The satellite link will be in place during the whole show so she can speak if she is a winner.
"Anything that happens, she will be there to say thanks," the spokesman told the BBC.
Her nominations include the prestigious prizes for record, album and song of the year.
Kanye West leads this year's field with eight nominations
The star, whose hits include Back to Black and Rehab, will remain under medical supervision while she is out of the Capio Nightingale clinic.
"She is feeling great, looking healthy and looking forward to doing what she does best," her spokesman said.
Back To Black was the biggest-selling album of 2007 in the UK, shifting more than 1.85 million copies, and has sold another 1.5 million in the US.
The Grammys is the most prestigious award event in the music industry's calendar.
Organisers have also announced that Kanye West - who leads this year's field with eight nominations - will also perform.
Other performances include a duet between Beyonce and Tina Turner, John Fogerty playing with Jerry Lee Lewis and Little Richard, plus the Foo Fighters, Aretha Franklin and Alicia Keys.