This app transforms your phone into a harmonica. You really have to see and hear it to believe it. You can play your harmonica/phone just by putting your phone up to your lips. Or if you think that's gross, you can play by touching with your fingers. A slider lets you easily swap inhaling/exhaling and even control dynamics (loudness). If you are an accomplished musician, we want to see what you can do with this. (We're serious -- do something awesome and put it on YouTube.) And if you haven't touched one of these in years, go for it and have some fun.