A wind harp is just what the name says, a harp played by the wind. You don't need lessons with this instrument, just a light wind will do. This design uses four steel strings and two magnetic pickups made with a pair of nails. You can build one with just one string with good results. Mine is 8 feet long, but you can make it as short as 2 feet or as long as you want. I mounted the wind harp on top of a shed and connected the signals from the pickup to my PC inside the house. I broadcast these sounds 24/7 on the internet radio using ShoutCAST. You can hear the wind harp at: http://home.comcast.net/~botronics/windharp.html
I also have some blogs about how to set up your own internet radio station at the above link.
I use Solar Garden lights to power this project, but for this instructable, I'm showing the basic concept of the construction. How you power it is up to you.