Demi Lovato

Demetria Devonne "Demi" Lovato (/ˈdɛmi loʊˈvɑːtoʊ/ DEM-ee loh-VAH-toh or lə-VAH-toh) (born August 20, 1992) is an American singer, songwriter, actress and model who made her debut as a child actress in Barney & Friends. In 2008, Lovato rose to prominence in the Disney Channel television film Camp Rock and signed a recording contract with Hollywood Records. Musically, Lovato is considered a pop and pop rock. She released her debut album, Don't Forget, that September; it debuted at No. 2 on the U.S. Billboard 200 and has been certified gold by the Recording Industry Association of America (RIAA) for sales of over 530,000 copies. In 2009, Lovato received her own television series, Sonny with a Chance. Her second album, Here We Go Again, was released that July and debuted at number one on the U.S. Billboard 200, and it has been certified gold by the Recording Industry Association of America (RIAA) for sales of over 650,000 copies. Its title track became her first single to break the top 20 of the Billboard Hot 100, reaching number 15, and was certified platinum.

Miley Cyrus

Miley Ray Cyrus (born Destiny Hope Cyrus; November 23, 1992) is an American singer, songwriter, and actress. Born and raised in Franklin, Tennessee, she held minor roles in the television series Doc and the film Big Fish in her childhood. Cyrus became a teen idol for her portrayal of the starring character Miley Stewart in the Disney Channel television series Hannah Montana in 2006; her father Billy Ray Cyrus additionally starred in the show. Cyrus subsequently signed a recording contract with Hollywood Records; her debut studio album Meet Miley Cyrus (2007) was certified quadruple-platinum by the Recording Industry Association of America (RIAA) for exceeding four million shipments. Cyrus released her second album Breakout and launched her film career as a voice actress in the animated film Bolt in 2008.

Cyrus starred in the feature film Hannah Montana: The Movie and began cultivating a maturing image with her EP The Time of Our Lives in 2009. In 2010, she released her third album Can't Be Tamed, which stands as the lowest-selling record of her career, and starred in the coming-of-age film The Last Song. During production of the movie, she began an on-again, off-again relationship with her co-star Liam Hemsworth. Cyrus focused on her acting career with several television and film appearances in 2011 and 2012. Her sexually explicit behavior generated widespread controversy while promoting her fourth album Bangerz (2013), her first under her recording contract with RCA Records. Cyrus' independently-released fifth studio album Miley Cyrus & Her Dead Petz (2015) deviated from her traditional pop style for more psychedelic experimentation.

Ed Sheeran

Edward Christopher "Ed" Sheeran (born 17 February 1991) is an English singer-songwriter and musician. He was born in Hebden Bridge, West Yorkshire and raised in Framlingham, Suffolk. After dropping out of school at 16, he moved to London the following year, in 2008, to pursue a career in music. In early 2011, Sheeran independently released the extended play, No. 5 Collaborations Project, which caught the attention of Elton John and Jamie Foxx. After signing with Asylum Records, his debut album, + (read as "plus"), was released on 9 September 2011 and has since been certified six-times platinum in the UK. The album contains the single "The A Team", which earned him the Ivor Novello Award for Best Song Musically and Lyrically. In 2012, Sheeran won the Brit Awards for Best British Male Solo Artist and British Breakthrough Act.

Sheeran's popularity abroad began in 2012. In the US, he made a guest appearance on Taylor Swift's fourth studio album, Red. "The A Team" was nominated for Song of the Year at the 2013 Grammy Awards, where he performed the song with Elton John. He spent much of 2013 opening for Swift's The Red Tour in North America dates. In late 2013, he performed three sold-out shows at New York's Madison Square Garden as a headline act. He was nominated for Best New Artist at the 2014 Grammy Awards.

Christina Aguilera

Christina María Aguilera (born December 18, 1980) is an American singer-songwriter and actress. In the early 1990s, she appeared on television series Star Search and The Mickey Mouse Club. In 1998, Aguilera signed with RCA Records and recorded her self-titled debut album, which was released in 1999. The album was a commercial success in the United States, spawning three U.S. Billboard Hot 100 number-one singles—"Genie in a Bottle", "What a Girl Wants", and "Come On Over Baby (All I Want Is You)", and helped Aguilera win the Grammy Award for Best New Artist. In 2000, RCA released Aguilera's Spanish-language album Mi Reflejo and holiday-theme album My Kind of Christmas. Her 2002 fourth studio album, Stripped, ventured into various genres including hip hop, Latin, and rock, and won a Grammy Award for Best Female Pop Vocal Performance for its second single "Beautiful".

Aguilera's 2006 fifth studio album, Back to Basics, was inspired by blues, soul, and jazz music of the 1920s-40s. The album peaked at number one on record charts of thirteen countries and won a Grammy Award for Best Female Pop Vocal Performance for its first single "Ain't No Other Man". In 2010, RCA released Aguilera's electronic-influenced album, Bionic, which failed to match the success of her previous albums; later that year, she starred in the film Burlesque. The following year, Aguilera was featured on Maroon 5's top-ten single "Moves like Jagger" and became an original coach on the U.S. television series The Voice, having since appeared on five of its nine seasons. Her 2012 seventh studio album, Lotus, became the lowest-selling album of her career. However, she later experienced rehabilitated commercial success in 2013, being featured on the top-ten singles "Feel This Moment" and "Say Something", which won a Grammy Award for Best Pop Duo/Group Performance.