Abstract: A reed for a harmonica or the like has a free end portion that is adapted to vibrate and give a predetermined tone and a T-shaped mounting end portion substantially the same width as the free end portion and having a pair of laterally projecting tabs. A reed support plate is formed with a pair of transversely spaced and longitudinally extending edge portions that form with a pair of longitudinally spaced and transversely extending web portions a window having a width generally equal to the reed width. A groove is formed at one of the edge portions and opens at the substantially planar face of the mounting plate. This groove extends transversely from the window and has a groove width substantially equal to the reed width, while a substantially planar base surface of the groove is inclined away from the window to the face.