"Flashlight" is a song originally performed and composed by Jessie J. The song was released in 2015 and featured on the soundtrack for the movie "Pitch Perfect 2." It was written by Sia, Sam Smith, Christian Guzman, and Jason Moore. Notably, Sia initially intended to include the song on one of her own albums, but ultimately decided to offer it to Jessie J. "Flashlight" became a commercial success, reaching the top 10 in several countries. The song showcases Jessie J's powerful vocals and emotional delivery, combined with a catchy pop melody.