Listen to Waltz - Serenade For Strings online. Waltz - Serenade For Strings is an Unknown language song and is sung by The Regency House Orchestra. Waltz - Serenade For Strings, from the album 100 Classical Chillout : Chilled Relaxing Masterpieces, was released in the year 2017. The duration of the song is 3:29. Download Unknown songs online from JioSaavn.