Abstract: The invention relates to a ligature for the mouthpieces of single-reed wind instruments, consisting of a rigid closed ligature in the form of a slightly conical ring with a slightly convex wall, in which the ligature is made from ebony and is provided externally with two central circles on the convex part, as well as four upper circles and two smaller circles. The shape and material of the ligature provide a substantial improvement in terms of sound and greater strength in relation to a traditional ligature.