const width = 8.44 * numberOfOctaves + 1.15;
    const body = document.createElement("m-cube");
    body.setAttribute("color", "#303030");
    body.setAttribute("width", width);
    body.setAttribute("height", 2);
    body.setAttribute("depth", 1.5);
    body.setAttribute("x", width / 2 - 0.53);
    body.setAttribute("y", 1);
    body.setAttribute("z", -0.5);
    pianoKeysGroup.appendChild(body);

    const o = 8.49;

    for (let octave = 0; octave < numberOfOctaves; octave++) {
      whiteKeyTypes.forEach