Grammy producers said, however, that they planned for Ms. Winehouse, who had recently entered a rehabilitation clinic, to appear, probably via satellite, during the program, which will be televised live from the Staples Center here at 8 p.m. Eastern time on CBS.
“You will see Amy Winehouse on the Grammys,” said Ken Ehrlich, the longtime producer of the show. “I’m very happy.”
Ms. Winehouse’s music and image are a bridge between 1960s girl-group pop and modern-day hip-hop, and her addition to the show’s lineup would fill a stylistic void as Grammy organizers strain to honor 50 years of musical history while staking a claim to post- MySpace relevance. But there may be some awkward moments if Ms. Winehouse, who has six nominations — for her album “Back to Black” (Universal), her self-referential single “Rehab” and herself, as best new artist — is a big winner. Only Kanye West has more nominations.
In announcing that Ms. Winehouse’s efforts to obtain a visa had been rejected by the United States Embassy in London, a statement released by her British publicity company, the Outside Organization, 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.”
This is not the first time visa troubles have derailed a planned television appearance by an emerging British star. The pop singer Lily Allen sought entry to the United States last August to perform at the MTV Video Music Awards, but American immigration officials revoked her visa. The official reason was never disclosed, but her manager said it might have been tied to a squabble with photographers in London after which she was detained by the police.
Last-minute Grammy production changes continued even as advance promotion for the event intensified, with the takeoff on Thursday morning of a Grammy-branded 757 jetliner for Los Angeles carrying contest winners who watched John Legend perform an in-flight concert.