The microphone comprises one or more strips (30) of a piezoelectric sheet material secured to the surface of the cymbal (10), each strip having metallised electrodes on its opposed surfaces. The strips are disposed radially of the cymbal. The preferred material is polyvinylidene fluoride in polarized form, the axis of the main uniaxial mode of the material being transverse to the longitudinal axes of the strips. In an alternative embodiment (Fig. 1), a single radial strip (16) is used in combination with a circumferential strip (18).