Listen to Who's That Knocking online. Who's That Knocking is an English language song and is sung by The Genies. Who's That Knocking, from the album The Rebellious Juke Box Plays Doo-Wop Daddies (Volume 1 - The Uptempo Sounds), was released in the year 2014. The duration of the song is 2:15. Download English songs online from JioSaavn.