Listen to Introduction and Variations on a Theme of Mozart, Op. 9 online. Introduction and Variations on a Theme of Mozart, Op. 9 is an English language song and is sung by Andres Segovia. Introduction and Variations on a Theme of Mozart, Op. 9, from the album The Greatest Works for Guitar, was released in the year 2010. The duration of the song is 3:32. Download English songs online from JioSaavn.