This Tape Is Played By Rubbing Dirt In It

[modcult.org] http://modcult.org/read/2010/2/25/this-tape-is-played-by-rubbing-dirt-in-it?utm_...

[web.archive.org] https://web.archive.org/web/20100621184950/http://modcult.org/read/2010/2/25/thi...

Looked it up on Discogs and I see it comes with the dirt. That'd be handy if you live in Waterworld and soil is hard to come by.

I queued up Haters recently, but I wouldn't count that dirt as a recording.

Would this get into B2B if it existed? Haha:

[thehardtimes.net] http://thehardtimes.net/news/noise-bands-new-ep-just-round-piece-of-sandpaper/

This highly collectible record is imprinted with footsteps of gallery visitors, arguably audible contributions:
[www.popsike.com] http://www.popsike.com/php/m-detaildata.php?itemnr=260632512192
[www.discogs.com] https://www.discogs.com/Christian-Marclay-Footsteps/release/357525

But it's still the same album?
Those visitors surely didn't distribute their steps evenly.
So, if that were the case, would all those records be counted as one album or would each one be unique and therefore have to be added seperately (with different contributors)? Are the visitors band members (I would doubt that)?

It'd be great if each record had primarily credited a collaboration including the people who had stepped on that particular record. Then each individual one we could find details on would become a separate release.

Could audiophiles tell the difference in sound between a record that's been stepped on and one that hasn't?