Listen to Serenade for Strings in E-Flat Major, Op. 6: II. Allegro ma non troppo e grazioso online. Serenade for Strings in E-Flat Major, Op. 6: II. Allegro ma non troppo e grazioso is an English language song and is sung by Prague Philharmonia and Jiří Bělohlávek. Serenade for Strings in E-Flat Major, Op. 6: II. Allegro ma non troppo e grazioso, from the album Dvořák and Suk: String Serenades, was released in the year 2018. The duration of the song is 5:54. Download English songs online from JioSaavn.