First time it has been free in it's two year history.

Ocarina turns your iPhone into an ancient flute-like wind instrument. It responds to your breath, touch and movements, allowing you to create beautiful sounds as long as you put some time into your craft. If you already are an advanced musician, the app offers a variety of ways to change up the sounds as well. You can also listen to other Ocarina players from all over the world, rate performances, and share your own performances.