Abstract: A toy musical instrument of the type commonly known as a kazoo having an open-ended turret section, a resonating membrane positioned within the turret section and a retainer member for installation within the turret section and for releasably securing the membrane within the turret section utilizes a turret section having a plurality of protuberences and a retainer member defining an embossment which cooperates with the protuberences to secure the retainer member in a snap-fit relationship with the turret section when the retainer has been inserted a preselected distance through the open end of the turret section. The embossment and the protuberences are so shaped to permit the retainer and the turret section to be disassembled from snap-fit relationship only if the retainer body is positioned in a preselected rotational orientation relative to the turret section.