2NE1 (Korean: 투 애니원; pronounced "to anyone" or "twenty-one") is a South Korean group created by YG Entertainment. First appearing in a Cyon commercial campaign with Big Bang for LG Telecom, their debut single "Fire" was released on May 6, 2009.

The group's name stands for "New Evolution of the 21st Century"

Taylor Alison Swift (born December 13, 1989) is an American country pop singer-songwriter, guitarist and actress. In 2006, she released her debut single "Tim McGraw", which preceded the release of her self-titled debut album. Taylor Swift produced five hit singles on the Billboard Hot Country Songs charts and has been certified 3× Multi-Platinum by the Recording Industry Association of America.'

Kelly Brianne Clarkson (born April 24, 1982) is an American pop singer, songwriter, and occasional actress. Clarkson made her debut under RCA Records after she won the first season of the television series American Idol in 2002.
Clarkson has released four albums to date: her debut album Thankful (2003), her multi-platinum second album Breakaway (2004), My December (2007), and her latest album All I Ever Wanted (2009). Her first four albums have sold over 10.3 million copies in the United States.

Beyoncé Giselle Knowles (born September 4, 1981), often referred to mononymously as Beyoncé (pronounced /biˈjɒn.seɪ/), is an American singer, songwriter, record producer, actress and model. Born and raised in Houston, Texas, she enrolled in various performing arts schools and was first exposed to singing and dancing competitions as a child. Knowles rose to fame in the late 1990s as the lead singer of the R&B girl group Destiny's Child. According to Sony, Knowles record sales, when combined with the group, have surpassed 100 million.

Esmée Denters (born September 28, 1988 in Westervoort, The Netherlands) is a Dutch singer. She was a regular cover-artist on video-sharing website YouTube where she covered songs from Brandy, Mariah Carey, OneRepublic, Natasha Bedingfield, Beyoncé Knowles, SWV and Justin Timberlake, amongst others. In 2008, Timberlake himself discovered her talent and Denters signed up as the first artist under Timberlake's new label imprint Tennman in association with Interscope. Esmée added the official music video to the debut single "Outta Here" from her debut album of the same name, to her official YouTube page on 22 May 2009, and her second single "Admit It" on the 3rd September 2009. Both songs have received five star ratings by the YouTube community. She is currently on tour with the up and coming Pop group Honor Society , as their opening act.

Christopher Maurice "Chris" Brown (born May 5, 1989) is an American recording artist and actor. He made his recording debut in late 2005 with the self-titled album Chris Brown at the age of 16. The album featured the hit single "Run It!", which topped the Billboard Hot 100, making Brown the first male artist since Montell Jordan to have his debut single top the chart. The album has sold over two million copies in the United States and was certified double Platinum by the Recording Industry Association of America (RIAA).