If you hadn't seen the film and only knew the tune from those videos, you'd have no earthly reason to play it.

So I guess such a tune wouldn't survive long in oral\aural transmission without whatever it was associated with. I wonder if there are 'tunes of little value' neglected by the collectors because they were after something 'to use' rather than recording, say, a ritual (or dance maybe) that they were associated with.

So a selective representation of the musical culture - which I think is one of Harker's points.