^ Yeah, that's what I mean. Every artist used to have their performances cut out. We are lucky to have this forum here where must of her performances are available in some way, but I'm not aware of any other artists having a fan site or something along the lines that have archived everything. No, wait, I take that back. There is
https://matsuurian.com/rsaya/ayaya.htm; literally has every performance of Aya Matsuura ever. I had lost all my Ayaya files in a hard drive crash and was able to recover everything from here.
Losing J-pop Suki 1.0 and Hello-online.org was a huge blow to artist performances from the mid-90s through around 2010. There was another jpop tracker prior to jpopsuki as well and lots of old files were lost when that went down.
The file trading platforms that people used in Japan are obsolete as well. Stuff like Utatane and Winmx have hardly anyone on them and I am not aware of replacements.