Hello out there. I was at a music festival recently and someone had an instrument that was very unusual. Description as follows: 260mm x 50mm "mouthorgan " piano? It had 10 black and 16 white keys. Made in Czechoslovakia. It has, on one end, an Air inlet. It appears to need some type of two pin and a square end to be attached to pump air into it. On the back it has a reset button.To blow into it is very hard and not suitable.