I somehow find this idea of the public picking the songs hypocritical. I mean we weren't allowed to pick anything for any prior missions, I'm not gonna bother.
And besides, the results are gonna be so filtered it will actually be some desk-jockey's choice!
And on top of that, the songs are gonna have to be politically correct and safe, family material like. Perfect, like an over developed dance show. Polished and preened. Record-company-sterile. Disney-like!! Idealistic, patriotic, showy..
Oft-times the beancounters and bureaucrats run stuff like this so they can have an influx of 'creative material'. You are doing the work they are supposed to be doing!! faaaggghhhh..