Listen to I. O quam suavis est online. I. O quam suavis est is an English language song and is sung by Peter Schreier, Virtuosi Saxoniae and Ludwig Güttler. I. O quam suavis est, from the album Music for the Dresden Court, was released in the year 2010. The duration of the song is 1:05. Download English songs online from JioSaavn.