Song

A song is a single (and often standalone) work of music intended to be sung by the human voice with distinct and fixed pitches and patterns using sound and silence and a variety of forms that often include the repetition of sections. Written words created specifically for music or for which music is specifically created, are called lyrics. If a pre-existing poem is set to composed music in classical music it is an art song. Songs that are sung on repeated pitches without distinct contours and patterns that rise and fall are called chants. Songs in a simple style that are learned informally are often referred to as folk songs. Songs that are composed for professional singers are called popular songs. These songs, which have broad appeal, are often composed by professional songwriters, composers and lyricists. Art songs are composed by trained classical composers for concert performances. Songs are performed live and recorded. Songs may also appear in plays, musical theatre, stage shows of any form, and within operas.

Katy Perry

Katheryn Elizabeth "Katy" Hudson (born October 25, 1984), known professionally as Katy Perry, is an American singer, songwriter, and actress. After singing in church during her childhood, she pursued a career in gospel music as a teenager. Perry signed with Red Hill Records and released her debut studio album Katy Hudson in 2001, which was commercially unsuccessful. She moved to Los Angeles the following year to venture into secular music after Red Hill ceased operations. After being dropped by The Island Def Jam Music Group and Columbia Records, Perry signed a recording contract with Capitol Records in April 2007.

Perry rose to fame in 2008 with the release of the singles "I Kissed a Girl" – which sparked controversy for its homosexual themes – and "Hot n Cold" from her second album, a pop rock record titled One of the Boys. Her third album, Teenage Dream (2010), ventured into disco, and contained the U.S. Billboard Hot 100 chart-topping singles "California Gurls", "Teenage Dream", "Firework", "E.T.", and "Last Friday Night (T.G.I.F.)" as well as the number-three single "The One That Got Away". The album became the first by a female artist to produce five number-one Billboard Hot 100 songs, and the second overall after Michael Jackson's album Bad. In March 2012, she reissued the album as Teenage Dream: The Complete Confection, which produced the songs "Part of Me" and "Wide Awake".

Selena Gomez

Selena Marie Gomez (/səˈliːnə məˈriː ˈɡoʊmɛz/ sə-LEE-nə mə-REE GOH-mez;Spanish pronunciation: [seˈlena ˈɣomes]; born July 22, 1992) is an American singer and actress. Born and raised in Grand Prairie, Texas, she was first featured on the children's series Barney & Friends in the early 2000s. In 2007, Gomez came to prominence after being cast in the Disney Channel series Wizards of Waverly Place, in which she starred as the lead character, Alex Russo, until its conclusion in 2012. She formed the band Selena Gomez & the Scene after signing a recording contract with Hollywood Records in 2008; they released the studio albums Kiss & Tell (2009), A Year Without Rain (2010), and When the Sun Goes Down (2011) before beginning a hiatus in 2012.

Gomez entered the film industry with star billings in feature films including Ramona and Beezus (2010), Monte Carlo (2011), and Hotel Transylvania (2012). She embraced an increasingly mature public image with her star billing in the film Spring Breakers (2013) and her 2013 debut solo studio album, Stars Dance. The latter project debuted at number one on the US Billboard 200 and included the Billboard Hot 100 top-ten single "Come & Get It." Gomez was released from her recording contract with Hollywood Records following the completion of her compilation album For You (2014). She subsequently signed with Interscope Records to continue work on her sophomore studio album, Revival (2015). It debuted at number one in the US and featured the top-five singles "Good for You" and "Same Old Love" and the top-ten single "Hands to Myself."