^^Yes, I'm familiar with both, which is why I suggested it might become his signature song. Perhaps it's a degree of comfort with it, that vocally, this is one of his best efforts. He doesn't constrict his vocal chords, and the result is that his voice is fuller, more complete and more polished.
Regarding the top vid: With Casey's early efforts, I'm never sure whether they are about his musical talents, his video editing skills, some combination of both, something else all together, or....????
Final note: Casey's ability to play many instruments is mind boggling, but the clarinet is not his friend.
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I do believe this is the first time that I've noticed that we
hear the clarinet before we
see it. Casey Abrams -- ever the clown!