Whitney Houston bows after performing "I Didn't Know My Own Strength" at the 2009 American Music Awards in Los Angeles, California in this November 22, 2009 file photo. Grammy Award-winning singer and actress Whitney Houston has died at age 48, media reports said on February 11, 2012.[Photo/Agencies]

Singer Katy Perry poses at the 2012 MusiCares Person of the Year tribute honoring Paul McCartney in Los Angeles February 10, 2012.[Photo/Agencies]