Check out Sia's latest faceless performance.
As is typical with Sia, it was a pitch-perfect vocal performance and her voice doesn't get any less stunning the more she shows it off. Between her gravelly delivery and very listenable tone, the "Chandelier" star is one of the best vocalists and songwriters working right now.
However, overall, as a performance? The whole thing was a little unconvincing. As brilliant as she sounds, and as interesting as the concept of not showing her face may have been to start with, it's getting a little tired. The main issue with Sia's concealed identity is that it's severely limiting to her as a performer. No one's asking the singer-songwriter to dance about the stage, mastering complex choreography the likes of which long-time collaborator Maddie Ziegler displays in their videos together, but it's hard to connect to an artist when we can't see their expression and as such can't see their passion.
It's the same issue that became so problematic when stars went through a phase of wearing sunglasses on stage (thanks Gaga); when you can't see someone's eyes it's so hard to form a real understanding of the emotion they're portraying.
Hopefully as this era comes to a close, Sia will ditch her faceless ways, but I wouldn't bet on it. The "Perfume" writer has confessed that she likes the anonymity that concealing her identity provides so we may be stuck with this performance style for the time being.