Music scraper doesn't seem to scrape anything

I’m running on RPi 3 and I’m very happy with the way it handles movies. However there’s not much happening on the music side, I can’t seen much metadata, info, no art. It does play music but on a black screen ( where I’d expect an animation at least, if not the video clip).

Is there something I omitted to set up? Movies worked out of the box.

Also can I specify the library for scraping? How about Discogs?

Thanks.

http://kodi.wiki/view/Music_library