"Firework" is a song by American recording artist Katy Perry from her second mainstream studio album Teenage Dream. It was released as the third single from the album on October 26, 2010, to U.S. mainstream radio. The song was written by Perry, Stargate, Sandy Vee and Ester Dean, and it was produced by Stargate and Sandy Vee. According to Perry, "Firework" is influenced by Jack Kerouac's novel, On the Road. It peaked at number one on the Billboard Hot 100, becoming Perry's fourth chart-topper in the US and third number-one single from the album. It so far spent four non-consecutive weeks at #1 on the Hot 100. It was also Katy Perry's first song ever to be added to Radio Disney's playlist. The song also reached number one in Canada and New Zealand. It peaked at number three in the United Kingdom, where it has been certified gold for sales in excess of 400,000 copies. On the week ending January 8, 2011, "Firework" sold 509,000 digital downloads in the US which is the second highest amount ever sold by a female artist (only behind Kesha's "Tik Tok", who sold 610,000 copies in a week), and fourth highest overall. Perry stated that Firework is "the most important song for on the record". An open casting call for the music video, shot in Budapest, drew an unprecedented 38,000 applicants. |  |