for Something is squeezing my skull, did Moz take ispiration from...

[zither]

this pix:

 

[mozzia]

I haven't seen that bigger version of the photo, with the graffiti on the wall before
As for the question its an interesting point...''there is no love in modern life'', and ''modern life is war'', there could certainly be a link. That could have been a little note he wrote down, then returned to for inspiration.