I have two copies of the song "You Don't Know Me (feat. Regina Spektor)" that I ran through this program. Each song has a different PUID, and I looked both of them up on Musicbrainz. Both PUIDs point to a version of this song. After processing, the first copy of the song has no lyrics. But here's where it gets weird. The second copy of the song has the lyrics for "Dirty Deeds Done With Sheep" by Weird Al.
I went to website and searched on both songs, and neither one has lyrics there. So where could the program have gotten the incorrect lyrics?