Listen to Keep Calm & Sleep (Ocean Waves) online. Keep Calm & Sleep (Ocean Waves) is an Unknown language song and is sung by Winter Night Music Universe. Keep Calm & Sleep (Ocean Waves), from the album Stress Relief – Natural Sleep Aids for Sleep Disorders, Calming Music, Nature Sounds for Emotional Distress, Sleep Music with Rain Sounds & White Noise for Sleep Problems, Relaxing Music to Calm Down & Chill Out, was released in the year 2015. The duration of the song is 9:08. Download Unknown songs online from JioSaavn.