Spotify mood playlists are in a mixed language

[Arkamos]

Plan

Premium

Country

Russia

Device

Desktop PC

Operating System

Windows 8.1

My Question or Issue

Spotify recently launched in my country, for which I am grateful. And yet I couldn't help but notice that the mood playlists that are available to me come in a mix of two different languages. I have the UI in English (I prefer it that way), and yet some mood playlists show in Russian, while others -- in English. All of them are listed under Spotify, so it's not the issue of them being user created that way.

While I can perfectly understand what both say, I find it a bit odd that there is such a mismatch and thought to bring up the issue here.