15:52: "Hark! The Herald Angels Sing" is a Christmas carol that first appeared in 1739 in the collection Hymns and Sacred Poems. Its lyrics had been written by Charles Wesley. Wesley had requested and received slow and solemn music for his lyrics, not the joyful tune expected today. Moreover, Wesley's original opening couplet is "Hark! how all the welkin rings / Glory to the King of Kings". (WikiPedia: https://en.wikipedia.org/wiki/Hark!_The_Herald_Angels_Sing)