Purchase or make a small wooden cross. Each section shouldn't stick out more than 2 inches from the center.
Drill holes into the middle of each section of the wooden cross. Take the four white keys and drill holes near the top of each key. Drill a hole into the center of the black key.
Tie a piece of cord to each white piano key and tie the other end to the wooden cross, using the holes you drilled. Hang the keys 1 to 2 inches from the cross.
Tie a piece of cord to the black piano key and connect it to the wooden cross by tying the cord around the center. Make two loops on the top side of the cross, using the cord. The black piano key should hang horizontally in the middle of the white keys.
Tie a piece of cord to your hook and tie the other end to the two loops made from the black key cord. The recommended hanging length from hook to cross is 1 to 3 inches.
Hang the wind chime where it catches the wind to hear the clicking of piano keys from your handmade wind chime.