Listen to Mozart: String Quartet No.3 in G, K.156 - 2a. Adagio (original version) online. Mozart: String Quartet No.3 in G, K.156 - 2a. Adagio (original version) is an Unknown language song and is sung by Quartetto italiano. Mozart: String Quartet No.3 in G, K.156 - 2a. Adagio (original version), from the album In the Mood for Mozart, was released in the year 2021. The duration of the song is 2:44. Download Unknown songs online from JioSaavn.