The song “We Are Young” is an Indie pop, alternative rock and pop rock music recorded by American indie pop band Fun featuring American recording artist Janelle Monae . The song was the first to be written for the band’s sophomore effort and was the first to be recorded, setting a template for the rest of the sessions that created the record. The song was released on September 20, 2011 as the first single from the trio’s second studio album, Some Nights. “We Are Young” was covered on Glee on the episode “Hold On to Sixteen”. The Glee cover of this song debuted at #12 on the Billboard Hot 100. The Glee cover went to #1 on iTunes chart in early December 2011, while the original version later went on to top the chart in February 2012 after being featured in the Chevy Sonic commercial aired during Super Bowl XLVI.

The song “Part of Me” is a dance-pop and pop rock music recorded by American singer, songwriter and actress Katheryn Elizabeth Hudson (born October 25, 1984), better known by her stage name of Katy Perry. The song was written by Perry, Bonnie McKee, Lukasz Gottwald, Max Martin and Nicholas Strunk while the production was done by Lukasz Gottwald Cirkut and Max Martin. The song debuted at number one on the U.S. Hot Digital Songs chart with 411,000 copies sold its first week. In second week, the single dropped to #4, after one week at #1. The song debuted at number one on the New Zealand Singles Chart, becoming Perry’s first number-one debut there and her seventh single to reach the top of the chart. She tied Mariah Carey for the record of seven number-one singles in the country. On February 12, 2012, Perry performed the single live for the first time along with “E.T.” at the 54th Grammy Awards