This is a song about working hands:

The lover sings of his own true love
the sailor sings of the sea
Tell me what have I to be singing of
But of my only property
I'll sing you a song of my hands

Hear the call of the midnight train
echoing down in the mines
The hiss of the steel and the grind of the chains
The rumble of the assembly line
That is the song of my hands

My two hands are mighty hands
They're hard, they're strong and free
In all this world there's no man
Can bind them in slavery