TechnoGyro is a Tap music game playing cool techno type music combined with a Simon Says type game.
There are 9 main levels with 8 sub levels within each level for a total of 72 level variations. As you progress through each level the tapping gets faster and your memory of the notes gets more challenging.
The game is very amusing and uses eye, hand and memory synergy. Try it, you will like it, and best of all it is Free!