I have got to admit I canned Spotify subs years ago - but how are they managing to grow their subscriber base whn it is now going to be £11.99 in the UK? That is way, way too high for what it offers...
For Linux you can use ZSpotify. It runs in the command line, just use a burner account to run as in zspotify because it's against their TOS of course, and might get you kickbanned. It also requires premium, but you only need it for a day at most, in order to run the download. Then you can cancel.