... “The soundtrack is a love letter to Africa, and I wanted to make sure we found the best talent from Africa and not just, you know, use some of the sounds and did my interpretation of it,” Beyoncé explained in a preview clip from the special. “I wanted it to be authentic to what is beautiful about the music in Africa.

“A lot of the drums, the chants — all of these incredible new sounds mixed with some of the producers from America, we’ve kind of created our own genre. And I feel like the soundtrack, it becomes visual in your mind,” she continued. “It’s a soundscape, it’s more than just the music because each song tells the story of the film.” ...
Via - Rollingstone