A pickup device (11) sandwiched between strings (3) and a top (4) of a body in a plucked string instrument comprises: a saddle (16) transmitting vibrations of the strings (3) to the body; and a bridge (25) fixedly attached on the top (4) of the body to support the saddle (16). Piezoelectric films (17, 18) being piezoelectric elements are pasted on areas of a front surface of the bridge (25) excluding a portion in which the saddle (16) is fitted. The vibrations of the strings (3) cause the pickup device (11) to also vibrate together with the top (4) of the body, and the portions of the bridge (25) on which the piezoelectric films (17, 18) are pasted make the largest bending deformations. The piezoelectric films (17, 18) are also free to make bending deformations to efficiently output electrical signals by a piezoelectric effect for musical sound in all pitch ranges.