Yea, way complicated for people who don't actually play musical instruments. It'd be great to pull up actual songs in the game and see how they work.
Plus, having to play 3 songs in a row for a show when the game mechanism isn't that fun to begin with is boring and takes too long.
Boring. Really slow. Up to wave 5 the enemies still only give 5 credits per kill when upgrades cost multiple hundreds. Can't see it getting any better.
Kind of boring, not enough power given. Just 10 per enemy, no matter how what level/what type, and still too easy. Not nearly interesting enough to keep me interested for the length of the game.