Katy Perry performs her hit song "I Kissed a Girl" during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Justin Timberlake and Al Green
Justin Timberlake sings with Al Green during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Rapper Lil Wayne
Rapper Lil Wayne accepts the Best Rap Solo Performance award during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Radiohead's Thom Yorke
Radiohead perform during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Estelle and Kanye West
Estelle (R) and Kanye West (L) perform the song "American Boy" during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Jonas Brothers and Stevie Wonder
The Jonas Brothers perform with Stevie Wonder during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)
Miley Cyrus (L) and Taylor Swift (2nd L)
Miley Cyrus (L) and Taylor Swift (2nd L) present the Grammy Award to Robert Plant and Alison Krauss (R) for the Best Pop Collaboration With Vocals for their song "Rich Woman" during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. (ROBYN BECK/AFP/Getty Images)