Adam Richard Wiles (born 17 January 1984), better known by his stage name Calvin Harris, is a Scottish DJ, singer, songwriter, and record producer. His gold-selling debut album, I Created Disco, was released in 2007 and contained the top ten singles "Acceptable in the 80s" and "The Girls". His second studio album, Ready for the Weekend (2009), reached number one in the UK Album Chart and includes the chart-topper "I'm Not Alone", the UK top five hit "Ready for the Weekend", and the singles "Flashback" and "You Used to Hold Me".

A remix album titled L.E.D. Festival was released in July 2010 as a free album in the August issue of Mixmag. Harris is currently working on his third studio album—due for release in 2012—which has produced the singles "Awooga", "Bounce", "Feel So Close", and "Let's Go". He has written and produced records for other recording artists including Kylie Minogue, Sophie Ellis-Bextor, Dizzee Rascal, Rihanna (on the international chart topper "We Found Love"), and Kesha.

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, and actress. Her earliest roles included Angela on Barney & Friends, before she became better known for her starring roles in the Camp Rock movies, as Sonny Munroe in the Disney sitcom Sonny with a Chance, and as the star of the 2009 movie Princess Protection Program. She is also involved in philanthropic activities through charity work and various social and environmental causes.

As a solo musical artist, Lovato released her debut album Don't Forget on September 23, 2008. The album debuted at number two on the Billboard 200 selling 89,000 copies in the first week. It has since shipped over 500,000 copies, earning a gold certification in the United States. Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at number one on the Billboard 200, selling 108,000 copies in the first week. Her third studio album, Unbroken, was released on September 20, 2011 and peaked at number four on the Billboard 200. She is working on her fourth studio album.

Raymond "Ray" Charles Jack LaMontagne ( /lɑːmɒnˈteɪn/; born June 18, 1973) is a Grammy-award winning American singer-songwriter. LaMontagne has released four studio albums, Trouble, Till the Sun Turns Black, Gossip in the Grain and God Willin' & the Creek Don't Rise. He was born in New Hampshire and was inspired to create music after hearing an album by Stephen Stills. Critics have compared LaMontagne's music to The Band, Van Morrison, Nick Drake, and Tim Buckley. He lives in Massachusetts with his wife and two children.

LaMontagne was born in Nashua, New Hampshire, in 1973. Despite his father's background in music, LaMontagne avoided the activity and spent time reading fantasy novels in the forest. He spent time in several different states in his youth. In his early teens he lived in Morgan, Utah, a small rural town of 2000 people. He was known for being an aloof, and indifferent to his education. He was much more interested in drawing images of Dungeons and Dragons than he was in his school work. He was well liked, and revered as somewhat of a mild nuisance. After graduating from high school, LaMontagne moved to Lewiston, Maine and found work in a shoe factory.