The music is great, but the glitches! Like it's been said many times, notes just miss out of nowhere, and having to go through ALL the menus again after exiting a song just kill it.
Good game, but has a few flaws. Firstly, as nostoc suggested, the ones should be filled in automatically - finding and clicking them is a waste of time and adds nothing to the game. Secondly, trying to erase a line doesn't always work the first time. But the puzzles are great and not too difficult. 4/5.
People, don't post your world record achievements in the comments. If you really did do it, it'll show when someone plays the level. Use the comments for stuff like how you liked the game or things like that. Jeez.
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