On the "songs" section, it started fine for me, but then never displayed the 5 songs to choose from, just asked me to combine 2 of them without showing me the list. I restarted, and it worked fine. So don't know if you can recreate that bug. Still, I'm enjoying playing. My guess is you will have to hand-curate some of these merges. Some are so spectacular -- and others are so-so