"Concrete clamantis in deserto"
Of course Charlie2006 is right, there is Concrete Poetry, and for a description see
here
There is also a Concrete Song:
Oh! Concrete is the life of man
Concrete! Johnnie!
I'll have Concrete when I can
Oh! Concrete for my Johnnie!
T'was Concrete made me pawn my clothes
Concrete! Johnnie!
Concrete got me broken toes
Oh! Concrete for my Johnnie!
Concrete drove my mother mad
Concrete! Johnnie!
Concrete nearly killed my Dad
Oh! Concrete for my Johnnie!
and so on.