I'd heard the Hatto story a while back, and this really did seem to be fraudulent.

However, I had my own odd experience along these lines last year. I went to add a Scottish CD to iTunes, and the tracks came up as being another Scottish CD, by a different performer. I owned that one too, so I compared the track listings. Although the songs and tunes were all different, the two CDs had the same number of tracks, and the track lengths for each track were almost identical, going through the entire CD.

I had both of these CDs around for years, both by reasonably well-known Scottish performers (I have to confess I don't remember exactly the 2 performers now - I believe one was the group Ossian, but it's been awhile since this happened.) I have no reason to think either of these CDs was fraudulent. I think this was just one really weird coincidence.