Enhance Google Assistant skill to e.g. play all by artist

Migrationbot

Really hoping to use Astiga to turn the Google Nest Hub Max we got free into a replacement for the hi-fi in the kitchen .. seems very close, but at the moment unless I'm doing something wrong, I can only play individual songs, or albums by album name. I can't see a way to play everything by an artist? "Play Annie Lennox"? But possibly I'm missing a keyword .. are there any docs on the questions the Assistant skill understands?