Spotify has an option to choose to not play an artist; however, even if you choose this option, if an artist is featured on a song it will still play. I believe that the feature should be expanded internally to block all songs on which the artist appears. It appears to be that the internal system that Spotify operates on already identifies those songs as categorized under those artists -- if an artist is featured on a song, it will appear on their artist page -- therefore, even if the artist is not the primary individual on a song, but is listed as a "feat." in the title, it should also be blocked.
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