Simply Piano Engine Sparrow in iOS libgdx in Android Favorite site A look under-the-hood of Simply Piano (Part 1) 1 A look under-the-hood of Simply Piano (Part 2) 2 References A_look_under-the-hood_of_Simply_Piano_-Part_1-JoyTunes-_Medium.pdf ↩ A_look_under-the-hood_of_Simply_Piano_-Part_2-JoyTunes-_Medium.pdf ↩