Video of Josh Cobb
Here’s another video of Josh Cobb, even more recent than the last two I posted. This is from just a few weeks ago, of him singing a Christmas medley.
By the way, “O Holy Night” is keyed in D-flat. He hits several big and full A-flats throughout the song, ending in a high D-flat. On “Mary Did You Know,” on the peak line (“praises of the Lamb”), “the” is a high C and “Lamb” is a “B.”