Pygmy new music is polyphonic very well before their discovery by non-African explorers from the Baka, Aka, Efe, and also other foragers on the Central African forests, while in the 1200s, that's not less than 200 several years before polyphony made in Europe. Note the numerous lines of singers https://lorenzoy1t8l.jts-blog.com/30388874/a-simple-key-for-tourism-and-travel-unveiled