Witko is a hip-hop artist from Pine Ridge Agency. He was mentioned in the Tom Barnes article, specifically for "Mutiny", which is considerably more difficult to find that his other tracks, possibly due to a label change or something like that:
Barnes' focus is on activist music, which makes "Mutiny" an understandable pick for him. That being said, songs about life can still have political meaning even when it is not overt.
Witko's music tends toward the dark. Lyrics are intelligent, but more devastating for that reason.
Tracks are enhanced - though not really lightened - by higher pitched accents. This can include piano accompaniment as on "New Day" or the chanting on "Major Key REMIX". I find it most effective on "There".
For rap fans in general, I think if you like Coolio you should check out Witko.