A traditional upright piano: squash two roofs, then stand up the side panels and lower the keyboard. Perfect doll-house furniture.
Why this level: You squash both side pockets into roofs, and the finish is 3D: side panels and keyboard are set at right angles.
You need: 1 sheet of origami paper, A pen for drawing details (optional)
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The piano belongs to a family of furniture folds that grew out of the traditional paper house. A sofa made this way first appears in an American kindergarten guide from around 1882, and from 1931 on Japanese origami books call a similar fold a “piano” or an “organ”. Nobody knows who first thought of it.
Did you know? A 1939 Spanish-language book named it “piano o sofá” — piano or sofa — as if the same fold could be either one!
White side up. Fold the top edge down to the bottom edge.
Fold in half side to side and unfold to make a vertical center crease.
Fold the left and right edges to the center line, both layers together.
Lift the left flap, open its pocket from below and press it flat: the outer layer goes back out to the side and the top becomes a triangle roof. Repeat on the right.
In the middle, fold the front layers up along the line under the roofs. Leave the back layer where it is.
Fold the top half of that band back down. This band becomes the keyboard.
Fold the two side walls forward along the vertical creases until they stand at a right angle.
Bring the keyboard band down so it sticks out level, and let its end hang down as the front of the keyboard. Stand the piano up and draw the keys. Done!