This is a digital keyboard/piano that you control with sliders and letter keys. The pink letters are the actual notes and the grey letters are which keys to press, it will also show which piano/keyboard key you pressed. The sound slider will change what instrument it is and the octave slider will change which octave(pitch) it is in. The very low/very high octaves don't sound great on certain sounds. Letters & keys are slightly wonky!(oops) :P
It is unfortunately quite laggy, but it my just be my computer! Don't press keys too fast or it will probably lag or miss a note. :( If you have any suggestions to make it better, say so in comments. :P ~I'm an Advanced scratch Coder(a scratch book)for the idea and instructions for some of the code. :) If I find a less laggy way to code or have more ideas for it I may update it.