Coheed fans are so in tune with this band. They knew to do the "HEY" chant at the beginning part even though this is the first time they had heard this song. Now listen to the studio version just released and sure enough there the chant.
Ah. I was thinking it could be that or someone in the band visually cued them in but my first impression from the video was that they did it themselves.
It has so many sounds to it. You got the classic metal. You got obvious Afterman sound reminiscing of Domino The Destitute. You got classic Coheed sound. Has a Good Apollo sound to it. I am so freaking stoked. TAKE MY MONEY!!!