Thanks for sharing your thoughts and sorry you were disappointed. We are definitely better at recognizing tracks that were commercially released, but have a good track record reognizing the more obscure as well. We reference against a database of 70 million waveform signatures, but there are definitely still holes.

Would love to see screenshots or logs of the African chants or Thai ballad singers so that we can get to the bottom of it. You can reach me directly at gabeaATtuneupmedia.com

Many thanks.