"Firework" is a song by American singer Katy Perry from her third studio album, Teenage Dream (2010). Perry co-wrote the song with its producers, StarGate and Sandy Vee, with additional writing from Ester Dean. The song is a self-empowerment anthem with inspirational lyrics, and was considered by Perry as an important song for her on Teenage Dream. "Firework" received mostly positive reviews from music critics, with some noting its catchy melody and danceable beat and comparing it to songs by English band Coldplay. The song was commercially successful, reaching the top spot on Billboard Hot 100 and the top five on 20 charts around the world. The song was released on October 18, 2010 by Capitol Records as the third single from the album. As of December 2012, the song has sold over 6 million copies in the US alone, making Perry the only artist with three songs topping the 6 million mark.