@reubent , Good question. I use Roon. I built, per Roon's own directions (to the letter) a Roon Rock out of an Intel NUC CPU. The total cost with RAM is about $300--wait, we are in an inflationary market!--I think I paid about $300 or so.
The Roon Rock, which just uses a fast little CPU box you buy. It's about 4" X 5". It runs in Linus (I think, but cannot recall). It's sole job is to run only two things--whatever it needs to boot up and communicate generally with you and Roon's software. That means it's incredibly fast and strong. It's the computer the size of 3 decks of cards (and an inch here or there) stacked on top of each other.
So, How I heard the song by Eva C? When Roon finishes an album I play it will run Roon Radio and try to match the vibe of your recent plays. It allows you to have input if you want. I do spend a good bit of time listening to female vocalists. Some in jazz, some in pop/rock, or whatever genre. And I had been listening to something by Joni Mitchell and then something by Madison Cunningham, then something by Melody Bardot. That playlist of. mine ended and Roon put on songs, one of which was Wayfaring Stranger, by Eva Cassidy.
The Roon software is pretty great. It is wonky here and there.