This is a reference to The Twa Corbies (see above). That folksong is about two crows eating a dead night that only three things know is dead, and these three don't care anymore. So the crows have informed the 10 Ton Brick singer that "Nobody feels what nobody knows," meaning that if no one knows about his pain, how can anyone care.
The lyrics are wrong in a few places. It's not
"I was drawn by your sweet throes"
rather it's:
"I was told by two sweet crows."
This is a reference to The Twa Corbies (see above). That folksong is about two crows eating a dead night that only three things know is dead, and these three don't care anymore. So the crows have informed the 10 Ton Brick singer that "Nobody feels what nobody knows," meaning that if no one knows about his pain, how can anyone care.