Listen to Christmas Oratorio No. 1 in G Major, BWV 248: I. Christians Be Joyful online. Christmas Oratorio No. 1 in G Major, BWV 248: I. Christians Be Joyful is an English language song and is sung by Vienna Symphony Orchestra and Ferdinand Grossmann. Christmas Oratorio No. 1 in G Major, BWV 248: I. Christians Be Joyful, from the album The Signature Series: Johann Sebastian Bach (Masterpieces from the Genius Composer), was released in the year 2014. The duration of the song is 6:16. Download English songs online from JioSaavn.