I had @youtubemusic decide my playlist ("your mixtape") for today and it has mostly been synthwave with a random @jennylewis song thrown in between.
I'm okay with this, but I think I need to feed the algorithm a bit more. 
Appreciate your feedback. You can improve your recommendations by hitting the thumbs up (like) and thumbs down (dislike) button of the songs – this will help in recommending a more accurate list based on your preferences. Check this out for more info: https://yt.be/help/4TPb