not even that hard... for the last level you have to cheat you can do it by holding the left click until you make it to the end then let go and click the end (you can use this for any of the other levels too)
2 get minimalist u have 2 go though an entire song without hitting a note (or make a mistake note) and 4 butterfingers u have 2 make 1000 mistakes (its easier than it seems)