My reaction about The Metallica Blacklist is described in the perspective of someone that loves music really deep. I hear metal since long time ago, and bands in metal like Death, Atheist to mention just two of them that aren't so mainstream are well known for including other genres different from strictly metal like jazz by giving an example. And they are widely recognized for their contribution to this kind of music, this time, Metallica just included different genres, very different indeed, into their classic black album by joining different artists from all around the world. Enjoy it and share your opinion too if you like. Peace. ? ❤️