Listen to Sleep Sounds online. Sleep Sounds is an Unknown language song and is sung by Baby Lullabies Land. Sleep Sounds, from the album Sing a Lullaby - Sleeping Music for Babies and Infants, Bedtime Instrumental Sleeping Music, New Age Soothing Sounds for Newborns to Relax, White Noises and Nature Sounds for Deep Sleep, was released in the year 2015. The duration of the song is 4:51. Download Unknown songs online from JioSaavn.