Early music of the British Isles, from the earliest recorded times until the beginnings of the Baroque in the 17th century, was a diverse and rich culture, including sacred and secular music and ranging from the popular to the elite. Each of the major nations of England, Ireland, Scotland and Wales retained unique forms of music and of instrumentation, but British music was highly influenced by continental developments, while British composers made an important contribution to many of the major movements in early music in Europe, including the polyphony of the Ars Nova and laid some of the foundations of later national and international classical music. Musicians from the British Isles also developed some distinctive forms of music, including Celtic chant, the Contenance Angloise, the rota