Sounds like one of those Nine Inch Nails obscurities tucked deep within one of the two stereo channels at just above an audible whisper. Kind of like the line, "I want to do terrible things to you" tucked within one of Trent's other tracks.

Neil Young has it figured out:

Into the black:

Hey hey, my my
Rock and roll can never die
There's more to the picture
Than meets the eye.
Hey hey, my my.

Out of the blue:

My my, hey hey
Rock and roll is here to stay
It's better to burn out
Than to fade away
My my, hey hey.