What year did music teachers started to teach?

There is no one definitive answer to this question, as the history of music education varies depending on the region and culture. However, it is generally believed that music teachers have been teaching for centuries. In ancient Greece, for example, music was considered to be an essential part of education, and students were taught to play instruments and sing from an early age. In the Middle Ages, music was taught in monasteries and cathedrals, and by the Renaissance, it was being taught in schools and universities. By the 19th century, music education had become widespread in the Western world, and music teachers were teaching in schools, conservatories, and private studios.