Listen to I. Adagio online. I. Adagio is an English language song and is sung by Johannes-Ernst Köhler, Gerhard Bosse, Siegfried Arnold, Gewandhausorchester Leipzig and Kurt Thomas. I. Adagio, from the album Beautiful Baroque, was released in the year 2009. The duration of the song is 3:22. Download English songs online from JioSaavn.