Listen to Mozart: Symphony No. 40 in G Minor, K. 550: 1. Molto allegro online. Mozart: Symphony No. 40 in G Minor, K. 550: 1. Molto allegro is an Unknown language song and is sung by Staatskapelle Dresden and Sir Colin Davis. Mozart: Symphony No. 40 in G Minor, K. 550: 1. Molto allegro, from the album The 50 Most Essential Classical Music Pieces Ever, was released in the year 2013. The duration of the song is 8:12. Download Unknown songs online from JioSaavn.