Where does the Music metadata come from?

Hi,

Does anyone know which online  database the Hub uses for the Music metadata? I’m having some problems with some of my albums being recognised when I get content info even though I think the Artist and CD name is correct. It seems to be hit and miss.

Thanks.

I read on another thread that it looks to  freebase.com which then refers to musicbrainz.org, although I have had a look here and although some of my albums are listed, I can’t seem to get them to be updated correctly by the Hub, I’ve tried no end of Artist and CD name combinations but no luck. (i.e. Guns N’ Roses Greatest Hits won’t find anything?)