My Chemical Romance is a Grammy-nominated American rock band from New Jersey, formed in 2001. The band consists of lead vocalist Gerard Way, bassist Mikey Way, guitarists Frank Iero and Ray Toro and drummer Bob Bryar. Shortly after forming, the band signed to Eyeball Records and released their debut album I Brought You My Bullets, You Brought Me Your Love in 2002. They signed with Reprise Records the next year and released their major label debut Three Cheers for Sweet Revenge in 2004; the album was a commercial success, selling over one million copies.

Shawn Corey Carter (born December 4, 1969), better known by his stage name Jay-Z, is an American hip hop artist and businessman. He is one of the most financially successful hip hop artists and entrepreneurs in America, having a net worth of over $150 million, selling over 30 million copies of his albums in the United States alone and receiving several Grammy Awards for his musical work.

Robyn Rihanna Fenty (born February 20, 1988), better known as Rihanna, is a Barbadian recording artist and model. Born in Saint Michael, Barbados, Rihanna moved to the United States at the age of 16 to pursue a recording career under the guidance of record producer Evan Rogers. She subsequently signed a contract with Def Jam Recordings after auditioning for then-label head Jay-Z.

The Wonder Girls (Korean: 원더걸스) are a South Korean girl group. Their producer and manager is singer-songwriter Park Jin-Young and the Wonder Girls are signed to his talent agency, JYP Entertainment. Each of the five original members were selected through auditions. Debuting in early 2007, they became popular in the fall of that year with the song "Tell Me."
They have scored three consecutive #1 hit singles: "Tell Me", "So Hot", and "Nobody". In 2008, they won two Daesangs ("Artist of the Year" Awards).

Adam Mitchel Lambert (born January 29, 1982) is an American singer, songwriter, and actor from San Diego, California. In May 2009, he finished as the runner-up on the eighth season of American Idol.[2] Lambert is currently working on his solo debut album, For Your Entertainment, due out on November 23, 2009.

Christopher Adam "Chris" Daughtry (born December 26, 1979) is an American musician and the lead vocalist, rhythm guitarist and main-songwriter for his band Daughtry. He was the fourth-place finalist on the fifth season of American Idol, eliminated from the competition on May 10, 2006.