[DaveBlake]

If you had 1000s of artists in your library you would understand why a folder per artist just so you can have artwork or load NFO is not the best idea. But the current design, needing all music in a unique artist folder, is too simplistic and needs changes. I hope in v18 to add the facilty to import additional info and art for an artist from a user specified location, including multiple artists covered by one file. The idea is to automate in a configuarable way, and to stop Kodi repeatedly rescraping data it already has.

Ah yes, having "Prefer online information" enabled is often a bad idea. My advice is always get the right information into the tags, and don't let anything mess with it. Scraping just the additional artist and album info is fine, but you don't want the names overwritten. Glad you seem to have what you wanted now.