Much to my surprise, I’ve put the amazon music into my sonos controller. I’ve been paying for amazon prime anyway, and just been ignoring the music that came with it.
I know its not as good as apple music or especially spotify, but its good.
The amazon music chillout station is really good.
So whilst this isn’t the right thing for selecting specific songs (you really need to pay extra for that), the basic amazon music that comes with prime subscriptions is fantastic for playing in the background.