To play the piano just push the corresponding key. If you want to make a makey-makey piano draw this key board with a pencil, excluding the sharps and flats (there wasn't enough letters). Hook each wire to each key using this chart. C=Space D=Up E=Down F=Right G=Left A=W B=A C=S
Very simple project. Enjoy https://pixabay.com/vectors/flat-note-music-symbols-musical-27906/ Credit for symbol for flat.