To improve flexibility for enhancing variety, hit easiness or the like by mixing an inclined pad part and a non-inclined pad part on the upper face of the instrument.

A plurality of the pad parts 30, 40 each having a face to be beaten 51 are provided on the upper face 10a of an upper case 10. The pad part 40 is the inclined one where an axis line L40 normal to the face to be beaten 51 is inclined to a straight line L0 normal to the upper face 10a. The pad part 30 is the non-inclined pad part in which a vertical axis line L30 to the face to be beaten 51 is perpendicular to the upper face 10a.