Taylor Swift

Taylor Alison Swift (born December 13, 1989) is an American singer-songwriter. Raised in Wyomissing, Pennsylvania, she moved to Nashville, Tennessee, at the age of 14 to pursue a career in country music. She signed with the independent label Big Machine Records and became the youngest songwriter ever signed by the Sony/ATV Music publishing house. The release of Swift's eponymous debut album in 2006 marked the start of her career as a country music singer. Her third single, "Our Song", made her the youngest person to single-handedly write and perform a number-one song on the Hot Country Songs chart.

Swift's second album, Fearless, was released in 2008. Buoyed by the pop crossover success of the singles "Love Story" and "You Belong with Me", Fearless became the best-selling album of 2009 in the United States. The album won four Grammy Awards, making Swift the youngest ever Album of the Year winner. Swift's third and fourth albums, 2010's Speak Now and 2012's Red, both sold more than one million copies within the first week of their U.S release. Speak Now's "Mean" won two Grammy Awards, while Red's singles "We Are Never Ever Getting Back Together" and "I Knew You Were Trouble" were successful worldwide. Swift's fifth album, the pop-focused 1989, was released in 2014 and sold more copies in its opening week than any album in the previous 12 years, making Swift the first and only act to have three albums sell more than one million copies in the opening release week. Its singles "Shake It Off", "Blank Space", and "Bad Blood" reached number one on the Billboard Hot 100. The album would go on to win three awards at the 2016 Grammys including Album of the Year making Swift the first and thus far only female artist to receive the award twice.

Adam Lambert

Adam Mitchel Lambert (born January 29, 1982) is an American singer, songwriter and stage actor. Since 2009, he has sold over 2.5 million albums and 5 million singles worldwide.

Lambert rose to fame in 2009 after finishing as runner-up on the eighth season of American Idol. Later that year, he released his debut album, For Your Entertainment, which debuted at number three on the U.S. Billboard 200. The album spawned several hit singles, including "Whataya Want from Me", for which he received a Grammy nomination for "Best Male Pop Vocal Performance."

In 2012, Lambert released his second studio album, Trespassing. The album premiered at number one on the U.S. Billboard 200, making him the first openly gay artist to top the album charts. In 2015, Lambert released his third album, The Original High, which debuted at number three on the U.S. Billboard 200.

Alongside his solo career, Lambert has collaborated with rock band Queen as lead vocalist since 2011, culminating in a successful world-wide tour from 2014 to 2016.

Nicki Minaj

Onika Tanya Maraj (born December 8, 1982), professionally known by her stage name Nicki Minaj, is a Trinidadian-born American rapper, singer and songwriter. Born in Saint James, Trinidad and Tobago and raised in South Jamaica, Queens, New York, Minaj earned public attention after releasing three mixtapes between 2007–09. She signed a recording contract with Young Money Entertainment in 2009.

Minaj's debut studio album, Pink Friday (2010), peaked at number one on the U.S. Billboard 200 and spawned the top-five single "Super Bass". During that time, Minaj became the first female solo artist to have seven singles simultaneously charting on the U.S. Billboard Hot 100. Her second studio album, Pink Friday: Roman Reloaded (2012), also topped the chart and its lead single, the pop crossover "Starships", peaked at number five on the Billboard Hot 100. Minaj's third studio album, The Pinkprint (2014), was preceded by its second single, "Anaconda", which peaked at number two on the Hot 100 and is her highest-charting single in the United States to date. Minaj made her film debut in the 2012 animated film Ice Age: Continental Drift, and also had a supporting role in the 2014 film The Other Woman. In 2013, she was a judge on the twelfth season of American Idol.

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.