Hey Jesse,
He did a pretty good cover of that great song, didn't he?
Yes, I would think that it is a difficult song to sing. Like lots of Gordon's songs, the melody is rather unusual and hard to stay with when you are singing it.
It is for me anyway but I can't sing so what do I know....lol.
Either way, I like Kefera's version of this very much.
Thanks for posting it.