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".

Armin van Buuren (Dutch pronunciation: [ˈɑr.mɪn vɑn ˈby.rə(n)]), OON (born 25 December 1976 in Leiden, Netherlands) is a Dutch trance producer and DJ. Between 2007 and 2010, he was voted number one in DJ Magazine's annual top 100 list of the most popular DJs. In the 2011 list, he ranked in second place. Since 2001, Van Buuren has hosted a weekly radio show called A State of Trance, which claims to have around 15 million weekly listeners in 26 countries, which would make it one of the most listened-to radio shows in the world. His 2008 studio album, Imagine, entered the Dutch album chart at #1, a first for a dance music artist in Dutch music history.

Armin van Buuren was born in Leiden, Netherlands on 25 December 1976, but grew up in Koudekerk aan den Rijn. Van Buuren started making music when he was 14.^{[citation needed]} He was inspired by French electronic music composer, Jean Michel Jarre, and wished to become a great electronic music composer like Jarre.^{[citation needed]}

He finished high school at the Stedelijk Gymnasium Leiden in 1995, and left for college to study law at Leiden University. While studying law, Van Buuren's interest for making music blossomed, and he began working as a DJ in a local club called Nexus. As his musical career began to take off, he put his law degree on hold, although he did return to finish law school in 2003.

Benjamin Géza Affleck-Boldt (born August 15, 1972), better known as Ben Affleck, is an American actor, film director, writer, and producer. He became known with his performances in Kevin Smith's films such as Mallrats (1995), Chasing Amy (1997), and Dogma (1999). Affleck won an Academy Award and a Golden Globe Award for the screenplay for Good Will Hunting (1997), which he co-wrote with Matt Damon, and has appeared in lead roles in such popular hits as Armageddon (1998), Pearl Harbor (2001), Changing Lanes (2002), The Sum of All Fears (2002), Daredevil (2003), Hollywoodland (2007) and State of Play (2009).

Affleck is a critically acclaimed filmmaker. He directed Gone Baby Gone (2007) and The Town (2010), playing the lead in the latter. He has worked with his younger brother, actor Casey Affleck, on several projects, including Good Will Hunting and Gone Baby Gone.

Affleck has been married to Jennifer Garner since June 2005. They have two daughters, Violet and Seraphina, and a son, Samuel. He dated the actress Gwyneth Paltrow in 1998. His relationship with actress/singer Jennifer Lopez attracted worldwide media attention, in which Affleck and Lopez were dubbed "Bennifer". The two broke up in 2004.