Why are these effrakata/force de frappe era concerts so rare to come by? Did they not perform as much?

Why are these effrakata/force de frappe era concerts so rare to come by? Did they not perform as much?

I ask myself the same question especially for concerts who took place in Kinshasa after Bercy. There is only the 14th Quartier Latin's Birthday.

All of the minor and big concert clips from that era were recorded, it's an issue of it being hard finds.

A lot of the guys on YouTube posting are ex-shop owners, videographers and minor producers - so we're dependent on them to upload them