Listen to Soft Piano online. Soft Piano is an Unknown language song and is sung by Ninna Nanna Relax. Soft Piano, from the album Canzoni d'Amore: Sottofondo di Pianoforte per Cena Romantica di San Valentino, was released in the year 2016. The duration of the song is 3:07. Download Unknown songs online from JioSaavn.