Well all your Iphone prayers have been answered. Now there is a Ocarina App for the Iphone. And it works just as you would think, blow in to the mic and place fingers on Ocarina (touch screen) keys and BAM! You will be linking it up in no time.
I suggest doing this only in crowded areas, with lots of girls. So that they can see how cool you are. Maybe make a video and put it on youtube.