That song about coding software would be White Collar Holler. It's in the DT. It was taken from the railroad work song Lining Track. Where do you go with this? It seems that you're looking at not only work songs (songs used as tools while working) but also songs about work (ex. cowboys singing songs for pleasure or lonely cowboys singing to their cattle ). Then throw in labor, either songs about work (as above) or about the labor movement. (You could involve union songs at this point.)

This song is about work & comes from the singing of Ricky Rackin, if he's looking in maybe he'll let on where it came from.

The Idle Wielder

I'm an idle wielder as many a man knows
I've no to eat & I've wore out my clothes
I'd stand in the bread lines if there were bread lines to hand
But there's nobody cares if I fall or stand

I'm an idle wielder God knows I've tried hard
You can find me each morning at the gates of the yard
There ain't no work for you lad, sir, I'm a wielder to trade
I helped build the best ships the Clyde ever made

Work harder they told us to meet the deadline
Six nights & a Sunday we'll pay double time
So I worked & I burned my hands blistered & sore
We met the deadline we built the Q4

Now when I was a young lad my heart swelled with pride
To think I helped build the best ships that were made on the Clyde
A wielder had status when there was wielding required
Now the wielding's all done & the wielder's been fired

HTML line breaks added. -JoeClone, 27-Jul-01.