Kant was a pretty smart lad. And universability doesn't mean the same thing as universality, any more than applicable means the same as applied. There's an implication there about having to be ready to search out the relevance of a song in a different context, and it might not always be obvious.
.............................

Route 66? My favourite road song, the one that gives me itchy feet, is the Sawdoctors' N17:

And I wish I was on that N 17
(Stone walls and the grasses green)
Yes I wish I was on that N 17
Stone walls and the grasses green        
Travelling with just my thoughts and dreams

Now as I tumble down highways,
Or filthy overcrowded trains,
There's no one to talk to in transit
So I sit there and daydream in vain.
And behind all these muddled up problems
Of living on a foreign soil,
I can still see the twists and turns on the road
From the square to the town of the tribes.