According to a press release, MMJ's Sept. 7 gig at Marymoor with Shabazz Palaces is part of the band's "'Spontaneous Curation Series'" letting fan club members and concert goers assist them in curating each night's set list through Twitter as they travel around the globe."
It's typical pseudo-MMJ pretention (which we mostly love them for). And judging front this quote that was included in the press release, it sounds like Jim/Yim James/Yames and and MMJ are starting to get in on their own joke:
"Curating spontaneously is best achieved by communication within a community because otherwise, curating in a vacuum can lead one to spontaneously combust. However, a spontaneously curated show is the best way to achieve collective musical combustion. Concurrently, we are crazed with excitement and curiosity to see how Roll Call and concert goers spontaneously contribute to our eclectic collective curation!" - My Morning Jacket