Other people hear differences - I hear similarities. I may be completely wrong about this, but...

WUNH played Buffalo Shoals by Wayne (here's an MP3 of the song) on the bluegrass show a little while ago, and while I was listening, I kept thinking "I know that song. It was wearing different words and a different title, and it wasn't bluegrass, but..." So I racked my brain, cued up and clued in. I don't know if It was one of those things where a person hears a song and years later they write something and the old memory of a song pushes through in the new, and the writer is completely unaware. I don't know whether it was intentional use of the other song. I don't know whether it's just me, thinking I notice things that other people think are totally whacked.

My questions are:
1) Does this stuff ever happen to other people?
2) For those who listen to the MP3 sample, does this song remind you of another song? (funny-- when I found a sample of the other song, it was in the same key.)