Wow, that's a good one. Yeah, I'm actually blown away by so many of these, there are a ton of completely impressive original melodies, harmonies and phrases—especially with the vocal lines—that go beyond a predictable 4/4 verse chorus. The comments on this thread are so ridiculous, they're completely missing how insane this research is. You could take half of these and write new original music based on them and it'd be incredibly solid. As it is, I'm really tempted to just gank some of these for myself.