Somewhere in the 1980s records started to appear with the "DMM" (Direct Metal Mastering) method. The whole background about DMM is explained on Wikipedia much better than I could do, so I will just focus on DMM in Discogs. In Discogs there is no special field to indicate that a record was made using DMM, so some people have used the free text field in the "Format" section for it. I looked at how often this happened: 571 times, which are distributed like this in the Discogs database: Distribution of releases tagged DMM This seems to be quite low as there should be many many more (especially the 1980s pop records). Of course, one explanation could be that it is actually not relevant information. I am not aware of records that were both pressed as DMM and non-DMM releases and where the only difference is that DMM was used (but I could be wrong). One thing that I also looked at is how many release were in Discogs that have DMM in the free text field but whic...
A blog dedicated to two of my hobbies: vinyl records and digital data and exploring where the two intersect. This blog is not affiliated with Discogs, but uses a lot of its data. On Discogs you can find me as metalmijn. I also get a lot of help from a friend you can find on Discogs as gerjolp Check out my Discogs cleanup scripts at: https://github.com/armijnhemel/cleanup-for-discogs/