Seems like they were trying to ape Justified's season finales to an extent, with the song about Harlan and all. The trouble being that that is a real song about a real place that ties into the themes of the series, whereas in this they just awkwardly had to add a syllable to "Charming" to shoehorn it into an unrelated…

Burn it Down by AWOLNATION.

Can we have a shout-out to Philthy Phil, the prospect who is just single-handedly keeping the club running in the background while everyone else yells at each other and shoots their guns in the air. He even watches the kids!