History Eraser is the first single from Courtney Barnett's second EP 'How to carve a carrot into a rose'. Mixed by Dann Hume (Alpine, Lisa Mitchell) it features Dan Luscombe (The Drones) on guitar/mellotron/vocals, and it is groovy.
Because she's a bad ass and totally took over the Silver Dollar, closing up NXNE.
Check the vine below, in which she ended the show handing off her guitar to the crowd.