iRecorder (App Store link) is a free virtual recorder application for the iPhone.

It’s great to see these virtual instruments starting to proliferate – but it would be even nicer to see more developers working on original expressive instruments that take advantage of the iPhone’s capabilities. 

Description:

Blow into the iPhone mic and experience the power of iRecorder. We have replicated every aspect of a real recorder. But more than just a digital musical instrument, iRecorder actually helps you learn how to play the recorder. Watch this space as iRecorder to develops into the an advanced learning device. We will develop and enhance based on your ideas and feedback.

NOTE: iRecorder will only work with the iPod using an external mic. For best results connect your device to headphones or amplified speakers.