Thanks @Watt for the mention of my plugin…
I’ve been meaning to update this to make use of viewtemplate cascades and tm-http-request instead of using javascript to fetch the data… If there are any budding TW plugin creators out there that want to give this a go - I’m happy to help mentor them through it first 
Also FYI - there are some APIs for Album covers on MusicBrainz . Which are :
- Search for a recording - https://musicbrainz.org/ws/2/release/?query=recording:Grace%20AND%20artist:buckley%20AND%20status:official%20AND%20primarytype:album
- Grab the resulting id from the release nodes to search for the cover art - https://coverartarchive.org/release/83c9239f-3aaa-4e27-a3b9-1b4604ca0ab9
- Get the cover art image url from the response - eg http://coverartarchive.org/release/83c9239f-3aaa-4e27-a3b9-1b4604ca0ab9/3784445891-250.jpg
Cheers
CB