There is this album with all the songs wrongly attributed, mixed with each other:
All the songs are there, however the titles are mixed.
For instance, the song listed as "Libertango - Astor Piazzolla" actually is "Angelita Huenuman - Inti-Llimani".
All songs in this album have this kind of catalog error.
I've found a google form to album at wrong artist list, hovewer none for this nature of mixing.