This is one of my favorite things Arca has ever worked on. FKA Twigs with Arca is an amazing duo, especially on the album LP1. This album was actually particularly powerful to me as an egg, as the only way I even knew how to express my femininity at that point, listening to A LOT of pre-transition Arca stuff while I was still YEARS away from figuring out I was trans. Something about all those songs she produced for other people just blew me away at that age. I was a massive fan before either of us ever came out, and gained a much deeper appreciation for her work after realizing we were both trans.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy: