Keyboard apparatus for an electronic musical instrument

A keyboard apparatus for an electronic musical instrument, the keyboard apparatus comprising:

• a plurality of keys composed of white keys and black keys, each key pivoting about a corresponding pivot axis so that a front end of the key can move up and down, and
• a plurality of reaction force generation members which are provided for the plurality of keys, respectively, and are made of an elastic body, and each of which is depressed by a depression of a corresponding key to generate a reaction force against the depression of the corresponding key, wherein
• each of the reaction force generation members has a dome portion which is thin and shaped like a dome so as to be elastically deformed by depression, and a base portion which is thick and is formed integrally with the dome portion to support the dome portion, the base portion extending downward seamlessly from all circumferences of a lower end of the dome portion to jut outward from a lower end surface of the dome portion;
• and
• a position of a point of intersection between the lower end surface of the dome portion of the white key and an axis line of the dome portion of either the white key or the black key is displaced from a position of a point of intersection between the lower end surface of the dome portion of the black key and the axis line of the dome portion of the either key.