Listen to Mozart: Serenade in D, K.250 "Haffner": 4. Rondo (Allegro) online. Mozart: Serenade in D, K.250 "Haffner": 4. Rondo (Allegro) is an Unknown language song and is sung by Iona Brown, Academy Of St Martin In The Fields and Sir Neville Marriner. Mozart: Serenade in D, K.250 "Haffner": 4. Rondo (Allegro), from the album Mozart in the Car, was released in the year 2021. The duration of the song is 7:20. Download Unknown songs online from JioSaavn.