One of my favorite Christmas songs is "O Holy Night," which is a beautiful piece of music requiring - this is important - a professional-level voice to really nail the high notes. I know my limits and tend to drop a few octaves when singing along in the car, because a missed note at a lower register is better than a sonically-shattered windshield.
That being said, please
As Leonard Pinth-Garnell would say, "That wasn't very good, now, was it?" If you can make it all the way through, you'll applaud as the singer takes a vocal mulligan on the final long note.
PS - You're welcome!