This thread, perhaps most productively in the near term, is focused on a MB/Discogs difference.
There are other, larger, holes. Holes that contain music released for well over 50% of the world’s population.
Chinese and Indian releases are almost totally absent AIUI.
The MB website is available in English, German, French and Dutch only.
Of the 12 language with more than 100 million speakers;
Mandarin 1051 million, English 510 million, Hindi 490 million, Spanish 420 million, Russian 255 million, Arabic 230 million, German 229 million, Benhgali 215 million, Portuguese 213 million, French 130 million, Japanese 127 million, Urdu 104 million,
MB is available in 3 (total speakers ~ 869 million) .
And unavailable in the languages of well over 3000 million.