Just came across this:
At first I thought there was actually a vocal album I didn't know about. I know Fan remixes are common, but you don't see too many that are vocal, especially of this caliber.
The link above has translated lyrics, but the original authors YT page is here:
He's got several other songs from Dragon Quest, Mother, and the like, my favorite one I noticed right away, Flash Man from MM2, my favorite MM song ever!