How do you get Siri to actually work with Spotify?

When I try to use it I get consistently laughably bad results. `Play songs by Albert King on Spotify` yields something like "Playing songs by R Kelly on Spotify". No, thanks.

Even when I ask for songs, albums, or artists I have saved in my library, Siri invariably finds something else entirely unrelated to play.

What's really frustrating is that this used to work reasonably well for me.