Listen to Theme Et Variations online. Theme Et Variations is an English language song and is sung by Gerassimos Voutsinas and John Giakoumakis. Theme Et Variations, from the album The Ultimate Guitar Collection: From Ludwig Van Beethoven to Mikis Theodorakis, was released in the year 2016. The duration of the song is 5:49. Download English songs online from JioSaavn.