How fair use does apply in that case? To me it seems a question of legally acquiring or not what you intend to use fairly.

The cassette era was fun. Copies all the way down, they were more convenient too, often you could fit two albums in one 90 minutes tape.

A lot of recording from the radio, often late at night when there were less ads, the DJ had less to say and played more obscure stuff.

I couldn’t watch more than 10 minutes of it. It was a CAM that you could hear coughs, laughs, people talking to each other.