Katheryn Elizabeth Hudson (born October 25, 1984), known by her stage name Katy Perry, is an American singer, songwriter and actress. Perry grew up with gospel music, and during her first year of high school she pursued a music career as Katy Hudson, releasing her first studio album called Katy Hudson which failed to chart. She recorded a solo album later, which was never released. After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry.

She first gained recognition with the release of her first mainstream album, One of the Boys in 2008, which spawned three Billboard Hot 100 top-ten songs—"I Kissed A Girl", "Hot n Cold" and "Waking Up In Vegas". Perry supported the album with her Hello Katy Tour. In 2010, her third studio album, Teenage Dream (2010), which topped the Billboard 200 chart, and spawned five number one singles—"California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)"—Teenage Dream was the only album (after Michael Jackson's Bad)—to do so, and the first female in history to achieve this milestone. She embarked on the California Dreams Tour, which grossed nearly $60 million worldwide. Perry re-released the album under the name of Teenage Dream: The Complete Confection on March 26, 2012, and the re-release has already spawned the number-one single "Part of Me".

Melissa Arnette "Missy" Elliott (born July 1, 1971) is an American rapper, singer-songwriter, record producer, dancer and actress. A five-time Grammy Award winner, Elliott, with record sales of over seven million in the United States, is the only female rapper to have six albums certified platinum by the RIAA, including one double platinum for her 2002 album Under Construction. Elliott is known for a series of hits and diverse music videos, including "The Rain (Supa Dupa Fly)", "Hot Boyz", "Get Ur Freak On", "One Minute Man", "4 My People", "Work It", "Pass That Dutch", and "Lose Control". In addition, she has worked extensively as a songwriter and producer for other artists, both alone and with her fellow producer and childhood friend Timbaland, with whom she received her first production credit on R&B singer Ginuwine's 1996's album Ginuwine...the Bachelor.

Elliott was born on July 1, 1971, in Portsmouth, Virginia. She is the only child of mother Patricia, a power-company coordinator, and father Ronnie, a Marine. At the age of four in 1975, she wanted to be a performer, though she knew no one took her seriously, as she was always the class clown. While her father was a Marine, the family lived in Jacksonville, North Carolina, in a mobile home. Elliott enjoyed school for the friendships she formed and had little interest in school work, though an IQ test classified her above average and she was able to jump two years ahead of her class. This made her feel increasingly isolated, so she purposely failed all her classes, eventually returning to her age-appropriate class. When her father returned from the Marines, they moved back to Virginia, where they lived in a vermin-infested shack.