Listen to Serenade for Strings in C Major, Op. 48: II. Valse online. Serenade for Strings in C Major, Op. 48: II. Valse is an English language song and is sung by Background Instrumental Music Collective. Serenade for Strings in C Major, Op. 48: II. Valse, from the album Soft Classical Melodies – Relaxing Piano, Beautiful Music, Classics Note, was released in the year 2017. The duration of the song is 2:53. Download English songs online from JioSaavn.