I mean I listened to the metal track, and I usually like metal, and I couldn't stand it. The guitar was just ... wrong. The lyrics were unintelligible, even though I had them right in front of me.

The pop song in the Katy Perry style was sort of intelligible but quite repetitive (moreso than most pop songs).

The other songs had similar issues.

I agree that it's quite an achievement, but it clearly suffers from the uncanny valley.