Checked this out again because it was just updated with new game modes, including a shmup one. Instantly went from hyped to deflated upon starting this up again and remembering that it's essentially a glorified visualizer - after all, AI generated randomization doesn't hold a candle to curated challenges that actually make sense to the human ear. Wonder if this will be the catalyst for me finally downloading Clone Hero...

Edit, 2 hours later: it was, in fact, the catalyst for exactly that.