Katy Perry released the ninth single from the E.P. for her second album, “Teenage Dream: The Complete Confection”. Before releasing another album, Katy Perry is going to milk every dollar she can from each track of the album. This time around, Perry releases a music video to the track, “Hummingbird Heartbeat”. The music video features many clips from her 3D Film, “Katy Perry: Part Of Me”. Check it out below!