Whitney Music boxes are great toys. I like the way the parameters can be adjusted on this particular implementation, but I find the preset instrument tones to be kind of annoying. I would probably rate it 4 or 5 stars if it had a few more options. In some ways it is a 5 star app hindered by a few limitations that make it something i may not use more than a few times. Right now, it is a great tool for demonstrating the principles of the music box, but to really amaze people with the sounds these things are capable of producing, i have to switch to free flash-based online Whitney music boxes. Here are some things Id love to see: 1. The instrument tones are harsh, except for the piano. This needs some subtle instruments - a few choices with less jarring tones, maybe more synth-like, i dont know. 2. It would be great if there were more presets with the way the tones are distributed along the white line. You provide a couple of random examples, but it would be really cool if you had a set of musical scales - major, minor, harmonic minor, etc.. I think one can manually set this up, but the presets would make it cooler and easier to show off. 3. Ok, now Im getting greedy, but i recall flash versions of the music box where there were many ways to adjust how the tone changed along the white axis - in one the tone changed in more of a "flanger" fashion as one moved out from the center of the field. In other words, instead of a kind of arpeggio effect as successive points along the white line are crossed, instead there was more of a flanger effect - a shift in... What is it? The particular harmonics that are dominant or something? Anyway, this is cool, but to be amazing it needs some tweaking.