Listen to Serenade No. 11 in E-Flat Major, K. 375: III. Adagio online. Serenade No. 11 in E-Flat Major, K. 375: III. Adagio is an English language song and is sung by Baby Good Night Academy. Serenade No. 11 in E-Flat Major, K. 375: III. Adagio, from the album Songs at Goodnight – Music for Baby, Sweet Lullabies, Gentle Instruments for Sleep, Calm Baby, was released in the year 2016. The duration of the song is 2:33. Download English songs online from JioSaavn.