If you've got an iPhone or and iPod Touch, one of the iPod headsets with microphones might work to turn your iPod or iPhone into an ocarina field recorder. Do your homework, because there are lots of complaints about durability of these products. I settled on the Griffin SmartTalk because it wasn't very expensive and ppl use it successfully with Smule's ocarina app and Skype. It has horrible Amazon ratings for durability, but I figured I could protect the poorly-designed connection that everyone complains about. I posted a short review with sound samples on YouTube <
http://www.youtube.com/watch?v=w6IMzkP8lYE>