"Hummingbird Heartbeat" is a song recorded by American singer Katy Perry for her third studio album, Teenage Dream (2010). It was written by Perry, Christopher "Tricky" Stewart, Stacy Barthe, and Monte Neuble. Stewart handled the production of the song, while Kuk Harrell produced Perry's vocals. "Hummingbird Heartbeat" was inspired by Perry's boyfriend at the time, Russell Brand. Musically, song contains electronica, glam metal, and rock. Lyrically, the song compares the feeling of being in love to the speed of a hummingbird's heartbeat.