Crab-harps were bioengineered non-sentient creatures created by the Yuuzhan Vong species. Crab-harps had long legs with tendons that linked the tips of each of their legs to their bodies. When their legs were locked in an extended position, the stretched tendons could be used to create music by plucking them. In existence by 26 ABY, during the Yuuzhan Vong War, these crustaceans were used by the Yuuzhan Vong as musical instruments or were set loose at ceremonies to make their own music.