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Releases with incorrect tracklistings on Discosg (part 3)

Another thing that I wondered about when looking at tracklistings: in how many of those tracklistings have people duplicated numbers or letters? I saw at least one, but there have to be many more.

Then again I thought that this is probably something that I should not be wanting to wonder about based on my earlier experiences with errors found in tracklistings.

Nevertheless, I pushed ahead and what I feared: there are lots of releases where in tracklist positions are duplicated. I found 101,474 instances in 31,056 releases.

Releases with possible duplication of tracklist positions

While most of these seem to be actual errors there are also a few exceptions, which are not always easy to identify automatically:
  1. some vinyl releases (like singles) are a double A side and will have 'A' on both sides of the label
  2. some releases don't have A/B sides, but instead have "This/That" or use something else
  3. some promotional releases have the same song on both sides and both will be called A
  4. people use indented lists and reuse tracklist positions, and I still need to figure out how to easily detect these
  5. people didn't correctly specify the quantity of releases (I only looked at releases where there was just a single physical item) and only indicated there was for example 1 LP, while there were 4 in a release
I will be adding an improved version of these checks to my scripts soon.
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