Listen to String Quartet No. 11 in C Major, Op. 61: I. Allegro online. String Quartet No. 11 in C Major, Op. 61: I. Allegro is an English language song and is sung by Konzentration Musikexperten. String Quartet No. 11 in C Major, Op. 61: I. Allegro, from the album Music for Better Memory – Classical Sounds for Study, Concentration, Brain Power, Easier Work with Mozart, Bach, Beethoven, was released in the year 2017. The duration of the song is 2:36. Download English songs online from JioSaavn.