At the firtst look at this app, it seems simple - but afterlooking at the settings this app shows its true colours. Some musitions pay to get multipal keyboards and synth software using hundreds of dollars per piece, not to mention th continuum(which this is a miniture version of), and still are looking for something like this. The continuum ( a synthasuzer that you can play nptes andchange the pitch just bydragging your finger) costs thousands of dollars, even without the softwares to run it. But this extraordanary app can do that AND MORE!!! I personally think this is one of the best deals on thr iTunes app store by being the $2.00 it is. This is THE best app i have ever encountered. I HIGHLY reccomend this app to any musition, or ANYONE who wabts weekof fun