This idea origionally came out of Startup Weekend Zimbabwe (we won!) and my team have agreed to let me release this openly rather than try to make money off it. Now that I have working prototypes for both the bluetooth version and the stand-alone one I will be putting together my videos for my THP prize entry. After this, I am hoping to partner with a local business to get these manufactured and into some schools and childrens homes here in Zimbabwe, where hopefully it will allow people who have never seen a piano or are incapable of playing an ordinary instrument to experience music. I am learning KiCAD and working on getting the boad files ready so that I can upload them to circuithub and get an idea of cost. If anyone is wanting to contribute then helping with the schematics would great - I am short of spare time for this :) Advice and comments welcome!