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 4 Seasons. The Excelsis Deo Medley: Deck the Halls / Excelsis Deo-Oh Come All Ye Faithful, from the album The Most Beautiful Christmas Carols, was released in the year 2016. The duration of the song is 1:48. Download English songs online from JioSaavn.