Sound is one of the senses which we sometimes under-rate, since so much music is available at the touch of a button, most of it for free, we live immersed in a sound-scape of our own choosing. But that's a very passive way to live.
It's safe to download the game. Apposite Software is the creator of this application which can be found in the Music Games category. You are able to download the installer of TapSonic 1.01 free of charge and have a look at users' reviews on Droid Informer. The app works fine on Android 2.2 and above.