I am absolutely baffled and blown away at how well this thing is working! I thought I'd have to tag all my genres, but no, it is finding music that is suitable even though the genre is missing! And it is playing songs I haven't heard in a long long time - this is just awesome! I can't believe how well it is working! I have over 12,000 songs, and for it to be able to filter through them all just so quickly and find relevant songs. This is much bigger than I was ever expecting!