Listen to Rock A Bye Baby online. Rock A Bye Baby is an Instrumental language song and is sung by Baby Lullaby Academy. Rock A Bye Baby, from the album Baby Music: Baby Lullabies, Nursery Rhymes, Music For Babies, Baby Lullabies and Baby Lullaby Music, was released in the year 2020. The duration of the song is 2:15. Download Instrumental songs online from JioSaavn.