I'm glad you enjoyed it. If you get some time I'd recommend checking out the full album, really the whole thing is his final statement, but Treaty specifically is the centerpiece. For me the album's aged really well so far.
For anyone wanting to know more about Cohen I'd recommend checking out this song -
Going Home - which gives you an idea of Cohen as man, versus Cohen as persona. For most of his life music was his bread and butter, feeding his children, so his recordings always had a very particular style. Poetry was the original passion, but eventually he *was* leaning hard into songwriting. But to get a better idea of Cohen as man you need to look at his poetry. Book of Mercy and Book of Longing are the most rewarding, IMO. I also enjoy Death of a Lady's Man but middle-aged and old-aged Cohen were very different people.
As for his actual music I'd recommend his later albums. I don't listen to much of his music before Recent Songs, and even Recent Songs only makes the cut because it's pretty. The Future and I'm Your Man were his attempts to make inroads into the American market, but the ones that come after I spend the most time with.
Anyway, to tie this back to
Musing on Mastery and what Cohen was doing in his latter albums, you'd have to recognize that he was a very learned man, but deeply humble. He knew religion, history, politics, human nature, and beneath his published work was even writing in meter, but he wasn't showy about it. So in his latter albums, if you really listen, and really look at the lyrics he's often saying a lot in very few words. But the wordplay is so subtle and unassuming that you can almost pass it over like nothing happened, and that he's not saying anything at all.
In Treaty the lyrics are so straightforward that the song seems almost too obvious, but every word and it's placement has meaning. He doesn't give it away, but in this one he's wanting to take the listener as far as he can.
So that's enough for now. If we have any other Cohen fans, or other comments I'd be interested to hear them. I'm guessing he's more of a Canadian icon, but I know some have read him.