6. "RE: 2017.08.22: beyond Thunderdome"
In response to message #2
I will note that, given the location mentioned in the top level post, they're roughly within the sphere of Wasteland Weekend which is just a little bit north of Edwards' north gate, and which does feature a Bartertown.
And live music.
In Xanadu did Kubla Khan A stately pleasure-dome decree Where Alph, the sacred river, ran Through caverns measureless to man Down to a sunless sea