[OBJECT] To provide a keyboard instrument that is easy for a beginner to use and less in the cost.
[MEANS FOR SOLVING] A keyboard instrument 10 includes a keyboard portion 4 constituted only of keyboards 21 in which tone intervals are arranged so as to repeat an arrangement of whole step, whole step, half step, whole step, whole step, whole step and half step. That is, without disposing black keyboards that can alienate a beginner from a keyboard instrument 10, the respective keyboards 21 are arranged. Thereby, while securing the respective keyboards 21 necessary for performing a piece of music, a beginner is allowed lightheartedly addressing a keyboard instrument 10 and playing readily. Since the number of keyboards 21 preparing for manufacturing a keyboard instrument 10 can be reduced, the lower cost can be achieved.