INSTRUMENT

An instrument comprises a body including a soundboard that transmits a vibration of a sound source, and a vibration exciter configured to vibrate the soundboard in response to an input signal. The vibration exciter comprises a vibrator member attached to the soundboard and configured to vibrate the soundboard in response to the input signal, a displacement member configured to displace relative to the vibrator member in response to the input signal, and a support member including an elastic member and supporting the displacement member via the elastic member with respect to the body. At least part of the vibration exciter overlaps a center of a region of the soundboard that extends in a width direction from a contact region of the soundboard where the soundboard contacts with the vibrator member.