Speed 24 - Extreme music game

This app will make your fingers stronger and faster like a pianist.Players can only tap on the black tile, do't touch a white tile. And do not miss any black tile.
Beginning of the game music is very slow, it's like a steam train, a slow start. However, by tapping on the black tile, accumulate Score values, we can let the music continue to speed faster. finally, the music is like a High Speed Railway.
Log into Game Center, you can submit scores to the leaderboard, and race with players around the world.
This game is casual, simple and approachable. But the difficulty is not low, because the speed of the music in real time with the player's operation and with the change.