Listen to The Excelsis Deo Medley: Deck The Halls / Excelsis Deo / Oh, Come All Ye Faithful online. The Excelsis Deo Medley: Deck The Halls / Excelsis Deo / Oh, Come All Ye Faithful is an English language song and is sung by The Four Seasons. The Excelsis Deo Medley: Deck The Halls / Excelsis Deo / Oh, Come All Ye Faithful, from the album Best Christmas Hits Ever, Vol. 14, was released in the year 2015. The duration of the song is 1:48. Download English songs online from JioSaavn.