One of my Daily Mixes has no theme anymore

[gainelyy]

   Recently, I noticed one of my daily mixes seems to be a bit messed up. Instead of giving me music I actually like to listen to, it now lists the featured artists as "undefined" and consists of what seems to be a bizarre mixture of very obscure rap songs (one of which is the only song the artist ever released.) I hardly even listen to rap- all of my other mixes are either rock or indie- so you can imagine how confusing this must be. Here are some screenshots I took:

   Here's what it looks like next to all my other mixes, which are totally normal. As you can see, the third one has no picture or artists listed below.

   And here's the actual playlist.

   As I stated above, I've never even thought about listening to this kind of music before. So why is it suddenly appearing in my mixes? Is this a new feature trying to help me get (wayyyyy) out of my comfort zone, or is it an actual problem? And finally, is there any way to get rid of it?

Thanks for reading,

Gainelyy

P.S. Also thought I might mention this problem is not exclusive to my laptop. The glitched-out mix appears on my phone, too.

[narak2]

This is might be because you might've accidentally stumbled on a rap song here and there. Unfortunately I don't think there's a way to delete that playlist. 

[gainelyy]

Hmm, maybe. I guess I’ll just have to wait for it to change again. I’m still confused about why it won’t list any artists or show a picture, though.