I recall a documentary I watched a while ago, and had almost forgotten, about an African tribe in which the presenter plays a 100 year old old voice recording

I recall a documentary I watched a while ago, and had almost forgotten, about an African tribe in which the presenter plays a 100 year old old voice recording of the natives' ancestors made by an earlier explorer . You could see the astonishment and joy in their faces when they heard the voices and names of tribe members they had heard about but never even seen. (If anyone else has seen the documentary please remind me of its title) We tend to place great emphasis on pictures and video, but audio recordings I believe, capture the past like none other. There is a connection here that is unique. Great work by the creators of IRENE. Much praise also to Bell and his team, and all the other uncredited contributors to the development of the telephone. I'm sure to start making audio recordings to store up for future generations.