By Aristo Video on February 22, 2016 @ 8:00am PST | Comments (0) The Cains - Knock Knock Video of The Cains - Knock Knock The official music video of the new single, "Knock Knock," by The Cains. The Cains, Artist Knock Knock, Song Justin Clough, Director DayStreet Records, GMV Nashville, Label Dusty Barker, Producer JAX, Production Company