Anna Thorvaldsdottir might be my current favorite composer. This piece is amazing, I think it's how the foundational note stays present through the entire piece. It's not a drone so much, but just a bedrock that holds throughout. Then so much of everything else that's going on feels like fragmentation. And then the last three minutes have the foundation tone in the cello, the gorgeous melody passing back and forth and the falling, descending ethereal gestures as well... It's so good.
Spektral Quartet just released a recording of her piece "Enigma" and it's really great.