I think I found the problem, it must have been something wrong with the way I was using the Python driver. Is it possible to use my Echonest API Key for Lyricfind? The example I found here: http://blog.echonest.com/post/17780837768/bringing-scalable-lyrics-to-music-applications says that all of the songs in my playlist have no lyrics, but I think that is probably because of an invalid key. If I do need a Lyricfind key, how can I get one?
Thanks, Matt