The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Form ERP:
When you see 2 bars with the same height, tap on them before they go away.To start with, you get 60 seconds to play.Each time you match a pair of bars, you get 5 more seconds added to the timer.If you make a mistake, then you lose a point. No changes to your timer, it'll continue to count down. When you run out of time, it's game over.If you tap on 2 bars that are right next to each other then you get 1 point, but if you match 2 bars that are separated by 3 bars, then you get 4 points, etc.Watch out, the better you get, the faster it'll get.Also, be careful to tap "on" the bar instead of in between the bars as the bars are moving. You score when a matching pair of bars disappear and the screen nods up and down at you. If you didn't match a pair of bars, then the screen shakes its head at you.If you press the home button and then later go back into this game, you'll lose 10 seconds of play time.You don't have to tap on the two bars at the same time, although you can if you'd like to.As you get more points, new things are unlocked for you to match.Check out the video at http://youtu.be/dy1QsRQlRRUHappy tapping!