Listening to "M" by Waterblack is a cool experience. It is heavy but not, dark but not really, lyrics are not really hitting on all cylinders but the overall song is a good mix. 

I would have liked to have heard a bit more chord changes and maybe more of a presence with the arrangement. Overall, this is a good song, but also it is not a stand out to me. Needs something I guess, but who the hell am I right?