Cover-ups, an essential,legendary,mysterious,exciting,frustrating,inspiring part of the "Northern" scene.
The point about some being already known to some people is fair comment-but you will always have had people claiming this and maybe moreso nowadays,when the older sounds could be 50+ years old!
Here`s a dilemma-if someone is playing a track "covered up" and somebody else knows the identity of the track-should that person(DJ or not) make the knowledge public?