Finding live performances of stuff that I liked this year proved to be very, very difficult. While this one wasn't necessarily my first choice, I feel like it's a solid contender.
Bartees made some waves earlier in the year with an EP of The National covers (which are good!) before dropping his debut full length in early October. It's a mash of hip-hop, indie rock, and jazzy music, and it comes recommended.
Mustang itself is a straight banger and is the first song on the video, after a brief introduction, but the entire performance is on the video.