Calvin Harris

Adam Richard Wiles (born 17 January 1984), better known by his stage name Calvin Harris, is a Scottish DJ, singer, songwriter, record producer, recording artist and remixer. His debut album, I Created Disco, was released in 2007 and was the precursor to his top-10 singles "Acceptable in the 80s" and "The Girls". In 2009, Harris released his second studio album, Ready for the Weekend, which debuted at number one on the UK Albums Chart and earned a gold certification from the British Phonographic Industry within two months of release. Its lead single, "I'm Not Alone", became his first number one on the UK Singles Chart.

Harris rose to international prominence in 2012 with the release of his third studio album, 18 Months. Topping the UK charts, the album became his first to chart on the Billboard 200 in the US, reaching number 19. All eight of the album's singles; "Bounce", "Let's Go", "We'll Be Coming Back", "Sweet Nothing", "Drinking from the Bottle", "I Need Your Love", "Thinking About You" and "Feel So Close", along with "We Found Love" reached the top 10 of the UK Singles Chart.

Ariana Grande

Ariana Grande-Butera (born June 26, 1993), known professionally as Ariana Grande (/ˌɑːriːˈɑːnə ˈɡrɑːndeɪ/), is an American singer and actress. She began her career in the Broadway musical 13, before landing the role of Cat Valentine on the Nickelodeon television series Victorious in 2009. After four seasons, the show ended, and Grande starred on the spinoff, Sam & Cat, which ended in 2014. She has also appeared in other theatre, television and film roles and lent her voice to animated television and films.

Grande's music career began with the soundtrack Music from Victorious (2011). She signed a recording contract with Republic Records and released her debut studio album Yours Truly in 2013, which debuted at number one on the US Billboard 200. The album's lead single, "The Way", reached the top-ten of the Billboard Hot 100, with critics comparing her wide vocal range to Mariah Carey's.

Grande's second studio album, My Everything (2014), also reached number one in the United States and charted well in various other countries. With the singles "Problem", "Break Free", "Bang Bang" and "Love Me Harder" from that album, she spent 34 continuous weeks in the top 10 of the Billboard Hot 100 and had the most top 10 singles of any artist in 2014. In 2015, Grande promoted My Everything with her first world tour, The Honeymoon Tour, and guest-starred in the Fox comedy-horror TV series Scream Queens. She also released the lead single "Focus" from her upcoming third album, released a holiday EP album, Christmas & Chill, and was heard on several collaborative projects.

Michelle Obama

Michelle LaVaughn Robinson Obama (born January 17, 1964) is an American lawyer and writer. She is married to the 44th and current President of the United States, Barack Obama, and is the first African-American First Lady of the United States. Raised on the South Side of Chicago, she is a graduate of Princeton University and Harvard Law School, and spent the early part of her legal career working at the law firm Sidley Austin, where she met Barack. Subsequently, she worked as part of the staff of Chicago mayor Richard M. Daley, and for the University of Chicago Medical Center.

Throughout 2007 and 2008, Obama helped campaign for her husband's presidential bid. She delivered a keynote address at the 2008 Democratic National Convention and spoke at the 2012 Democratic National Convention. She and her husband have two daughters together. She has become a fashion icon and role model for women, and an advocate for poverty awareness, nutrition, physical activity, and healthy eating.