Listen to Variatio 2. a 1. Clav online. Variatio 2. a 1. Clav is an English language song and is sung by Teodoro Anzellotti. Variatio 2. a 1. Clav, from the album The Goldberg Variations, was released in the year 2010. The duration of the song is 1:34. Download English songs online from JioSaavn.