Pietrobono de Burzellis (1417–1497) was one of the earliest musicians to be recognized as a performer. His fame rested on his technical virtuosity as a lutenist, his beautiful singing voice, and his skill as an improvisor. He was frequently referred to as Pietrobono del Chitarino, a reference to his improvised singing with the lute (a pear-shaped instrument related to the guitar), which was thought to be a modern version of the classical Greek musical practice of singing to the ancient kithera.