At least in American history, group singing became a tradition during times of oppression for black people. Many black people often get together to sing at night. The same was true for the black army during the Civil War. Then now church tradition is a way to pass on the ability to sing. In fact, these seemingly superior qualities in music can be said to be the unique culture of its own created under the oppression of white people in history. Use this culture to gain social acceptance. The famous Motown in the 1960s was a music company established by black people in a white society. Its establishment and continuation have played an important role in the development of music history and the development of black music culture. Cultural influences helped a lot over time. Nowadays, it is basically the help of church culture. Children who are exposed to these influences from an early age discover those geniuses in them. In fact, I personally think there are certain innate factors in it. But I can't be sure of this yet. My girlfriend is black. The friends around her are all very good at singing. They all sang in church back then.