I somehow knew this happened but had filed it away until Josh Marshall just posted it. It's a moving, tectonic moment--and I couldn't help noticing that the song specifically calls out "Senators, Congressmen" but not the head of state. Though I can't imagine Bob had any idea when he wrote it who he would play it for one day, it gives the whole thing an air of eerie inevitability. Reminded me of this intriguing interview. Don't block up the hall, indeed.