Short answers, pulled from the story.
The 46th Annual Grammy Awards took place on the 8th of February 2004 at the Staples Center in Los Angeles, California, its fourth year at that venue. It honored recordings, compositions, and performances from the 1st of October 2002 through the 30th of September 2003, and CBS broadcast the ceremony on tape delay.
Beyoncé was the most awarded artist at the 46th Annual Grammy Awards, winning five awards for her debut album Dangerously in Love and its lead single "Crazy in Love." Outkast was the most awarded group, taking three awards including Album of the Year for Speakerboxxx/The Love Below.
Janet Jackson's invitation to perform a tribute to Luther Vandross at the 46th Annual Grammy Awards was rescinded after Justin Timberlake briefly exposed her breast during the Super Bowl XXXVIII halftime show the week before. Timberlake still attended and apologized for the incident during one of his acceptance speeches, and CBS aired the ceremony on a five-minute tape delay.
Luther Vandross could not attend the 46th Annual Grammy Awards because of a stroke he had suffered several months earlier, despite winning four awards that night, including Song of the Year for "Dance With My Father." Celine Dion, accompanied by Richard Marx on piano, performed the song in tribute, and Vandross died the following year, in 2005.
Warren Zevon, who died in September 2003, received two posthumous awards at the 46th Annual Grammy Awards: Best Contemporary Folk Album for The Wind and Best Rock Performance by a Duo or Group with Vocal for "Disorder in the House," his duet with Bruce Springsteen. Six musicians, including Emmylou Harris and Jackson Browne, performed his song "Keep Me In Your Heart" in tribute.
Evanescence, an American rock band, won Best New Artist at the 46th Annual Grammy Awards, beating four other nominees including the rapper 50 Cent. Beyoncé, Jay-Z, Outkast, and Pharrell Williams tied for the most nominations overall that year, with six each.