Some interesting bits: Finland is indeed the country with most releases per capita in most genres; clear difference between Asia and Western countries in terms of genre distribution. And those end-of-graph drops that sparked "metal is dying" debates? This is rather due to a lack of data completeness and they tend to fill in to a certain level over time.
Frontend built with AI assistance; backend and all data work done by hand. Code and data release planned later this year. PHP, Html, CSS, JS were used. No building pipeline of any sort.