The Ronco de Leão (Snoring Lion) is a musical instrument that allows to make perpetual the motion of rubbing a rope. Previously it was necessary to always use two hands, one holding the instrument with skin, and the other, usually wetted, rubbed a string that conveyed their vibrations to the skin. Currently, there is a crank system that allows you to play the instrument on an ongoing basis and only with one hand, while also allowing sequences richest rhythmically. The Ronco de Leão (Snoring Lion) MISSOM® is produced based on a Portuguese popular drum, made with natural skin. In the rope is applied one tensioner which allows not having always the rope and the skin under tension, thus saving their physical characteristics. Dimensions: Variable between 14'' to 20''.