"Hummingbird Heartbeat" is a song by American recording artist Katy Perry, taken from her third studio album Teenage Dream (2010). It was written by Perry, Stacy Barthe, Monte Neuble, and Christopher "Tricky" Stewart, with the latter handeling the song's production. "Hummingbird Heartbeat" was inspired by Perry's boyfriend at the time, Russell Brand. Utilizing glam metal, rock, and electronica within its composition, the song also takes influence from dance-pop. Lyrically, "Hummingbird Heartbeat" compares the feeling of being in love to the speed of a hummingbird's heartbeat. The song received generally positive reviews from music critics, many of whom labeled it as a potential single choice. Upon the release of Teenage Dream, "Hummingbird Heartbeat" charted on the lower regions of the South Korea Gaon International Chart, peaking at 124, respectively. On September 11, 2012, the song was released as a single from Teenage Dream in Australia on 2Day FM radio.[1]