Hark! The Herald Angels Sing

"Hark! The Herald Angels Sing" is a Christmas hymn or carol written by Charles Wesley, The original opening couplet was "Hark! how all the welkin rings / Glory to the King of Kings". The version known today is the result of alterations by various hands, most notably George Whitefield, Wesley's co-worker, who changed the opening couplet to the familiar one we know today.

Source: Wikipedia

DisneyVillain uploaded this YouTube video, and notes: "Hark! The Herald Angels Sing" is a Christmas hymn or carol written by Charles Wesley, the brother of John Wesley. It first appeared in Hymns and Sacred Poems in 1739. The original opening line was "Hark! how all the welkin rings"; the version known today is the result of alterations by various hands. One of the original tunes that "Hark! How all the welkin rings" was sung to was also used as a tune for "Amazing Grace". Many hymns in the eighteenth century consisted merely of printed words without music. It was left to those leading the singing to choose an appropriate tune based on the metre of the verse. Wesley himself, however, envisaged his lyrics sung to the same tune as his Easter hymn, "Christ the Lord is Risen Today."