Pierre David Guetta (7 November 1967), known professionally as David Guetta (French pronunciation: [daˌvid ɡɛˈta]), is a French house music producer and DJ. Originally a DJ at nightclubs during the 1980s and 1990s, he co-founded Gum Productions and released his first album, Just a Little More Love, in 2002. Later, he released Guetta Blaster (2004) and Pop Life (2007). His 2009 album One Love included the hit singles "When Love Takes Over" (featuring Kelly Rowland), "Gettin' Over You" (featuring Chris Willis, Fergie & LMFAO) and "Sexy Bitch" (featuring Akon), the last becoming a top five hit in the United States and all three reaching #1 in the United Kingdom, as well as another internationally known single called "Memories" featuring Kid Cudi which became a top five hit in many countries. Guetta has sold over three million albums and 15 million singles worldwide. He is currently one of the most sought-after music producers. As at 2012 David Guetta is the world's most popular DJ, claiming the #1 poll position of the DJ Mag 100 popularity poll.

Nicole Prescovia Elikolani Valiente Scherzinger (born June 29, 1978) is an American singer, songwriter, dancer, record producer, model and actress. Scherzinger is well known as the lead singer of the Pussycat Dolls. Previously, Scherzinger was a backing vocalist for the late-1990s rock group Days of the New and was a part of reality TV girl group Eden's Crush. After the disbandment of the group, she joined the Pussycat Dolls and became the group's lead vocalist during their transition into a career in music.

The Pussycat Dolls rose to prominence when they enlisted Scherzinger as their lead front woman of the group. When Scherzinger joined the now multi-platinum group, they became a worldwide phenomenon, releasing two albums, PCD (2008) and Doll Domination (2008) and embarked on several concert tours. With her strong vocal range, Scherzinger scored the group a string of massive hit singles, including the number ones "Don’t Cha" (2005) and "Buttons" (2006), "Stickwitu" (2005), "I Hate This Part" (2008), and "When I Grow Up" (2008), which hit the Top 10 in 16 countries. In 2009, Scherzinger wrote and recorded an adaptation of A.R. Rahman’s "Jai Ho" (from the film "Slumdog Millionaire") which went to number one in 17 countries. Their debut album, PCD, has sold nine million copies worldwide, and their sophomore album, Doll Domination, has sold 5 million copies worldwide to date. The group won three Billboard Music Awards, two MTV Video Music Awards, and toured with Britney Spears, Christina Aguilera, and The Black Eyed Peas. The Dolls have sold 15 million albums, and 37 million singles worldwide, making them one of the best selling girl groups of all time.

Céline Marie Claudette Dion, CC OQ, (French pronunciation: [selin djɔ̃] ( listen); born March 30, 1968), is a Canadian singer. Born to a large family from Charlemagne, Quebec, Dion emerged as a teen star in the French-speaking world after her manager and future husband René Angélil mortgaged his home to finance her first record. In 1990, she released the English-language album Unison, establishing herself as a viable pop artist in North America and other English-speaking areas of the world.

Dion had first gained international recognition in the 1980s by winning both the 1982 Yamaha World Popular Song Festival and the 1988 Eurovision Song Contest. Following a series of French albums in the early 1980s, she signed on to CBS Records Canada in 1986. During the 1990s, with the help of Angélil, she achieved worldwide fame after signing with Epic Records and releasing several English albums along with additional French albums, becoming one of the most successful artists in pop music history. However, in 1999 at the height of her success, Dion announced a hiatus from entertainment in order to start a family and spend time with her husband, who had been diagnosed with cancer. She returned to the top of pop music in 2002 and signed a three-year (later extended to almost five years) contract to perform nightly in a five-star theatrical show at the Colosseum at Caesars Palace, Paradise, Nevada.