Listen to Angels We Have Heard On High/Hark The Herald Angels Sing/O Come All Ye Faithful (Medley) online. Angels We Have Heard On High/Hark The Herald Angels Sing/O Come All Ye Faithful (Medley) is an English language song and is sung by National Philharmonic Orchestra. Angels We Have Heard On High/Hark The Herald Angels Sing/O Come All Ye Faithful (Medley), from the album 25 Songs Of Christmas, was released in the year 1989. The duration of the song is 4:22. Download English songs online from JioSaavn.