Listen to O Tannenbaum online. O Tannenbaum is a German language song and is sung by Tölzer Knabenchor, Erich Ferstl and Gerhard Schmidt-Gaden. O Tannenbaum, from the album Festliche Weihnachtschöre, was released in the year 2007. The duration of the song is 1:42. Download German songs online from JioSaavn.