Abstract: A sound producer, especially adapted to the calling of predators, is in the form of an elongated body of a size and shape to be grasped and held in the human hand. One portion of the body constitutes a barrel open at one end for the outlet of sound and including a bore that extends from that one end to a transverse wall. Another portion of the body projects from the wall away from the barrel and constitutes an exposed mouthpiece that has a working surface of widthwise flat configuration but curving outwardly in a direction away from the wall. A groove runs lengthwise centrally of the mouthpiece and opens into the bore. An elongated and planar reed is secured at one end in the wall in a position to overlie and cover the groove when pressed thereupon by the lips of the user encircling the reed and the mouthpiece.