i got this keyboard from a thrift. i didnt expect much because it's new. took me ages to find the darn pitch resistor but it is found now. i added a photosensor and a momentary pushbutton to turn it on. the ldr lowers the pitch. i just recently discovered the power of capacitors and have added one with a momentary pushbutton to activate it. the cap makes it all ring modulated and sometimes makes it glitchy and s&h filtery and play random songs in odd minor keys. creepy. unbent, it plays songs, has a really cheap piano sound that doesn't even hold, and a car horn sound that is more like an organ. the letters make it say words, describe the sounds letters make, or spell something. it used to have a 1/4" output but i took it out and used it for something better.

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as you can see i made a cheap hole that used to have a half a super ball over it.