Listen to Beethoven: 12 Variations on "See the conquering hero comes" for Cello and Piano, WoO 45 - Variation XI. Adagio online. Beethoven: 12 Variations on "See the conquering hero comes" for Cello and Piano, WoO 45 - Variation XI. Adagio is an Unknown language song and is sung by Mischa Maisky and Martha Argerich. Beethoven: 12 Variations on "See the conquering hero comes" for Cello and Piano, WoO 45 - Variation XI. Adagio, from the album Beethoven for the Home, was released in the year 2021. The duration of the song is 3:24. Download Unknown songs online from JioSaavn.