Strings (tennis) be more durable than many other types of strings due to its outstanding tension retention. This may help to offset the high initial cost. The use of a dense string pattern also generally improves the longevity of natural gut. Natural gut is produced by drying fibers extracted from a part of the cow intestine called the serous membrane, or serosa, which contains collagen designed to withstand the stretching and contraction of the intestine. It is this elasticity that makes the fibers useful for tennis string. Sheep intestines have also been used for racquet strings in the past. The first natural
Janzi (musical instrument) Janzi (musical instrument) Janzi is a Ugandan string instrument invented by Ssewakiryanga James Junior also known as Ssewa Ssewa. It was vetted and accorded the Utility Model Protection by African Regional Intellectual Property Organization (ARIPO) Zimbabwe and Uganda Registration Services Bureau in 2017. The instrument has been a major instrument on all Janzi Band and Ssewa's performances since its inception. The Janzi has two long wooden necks on the left and right, with a narrow space in between. It is made up of 22 strings, 11 strings on either side attached to the sound box with plastic strings. The Janzi