fretless

The translation is “Every now and then.” I believe it is an idiomatic phrase in Cajun, not sure if French people would know it or not.
And it is the title of a very popular Cajun tune…which is how I think Lucinda means to use it in her lyrics.

The trouble is that people are spelling it 2 different ways.
Lucinda’s lyrics say “Tu le ton son temps.”
But if you search the web for “Tu le ton son ton” (last word is different) you will get dozens of hits for the Cajun tune.

So what does it mean in “Crescent City” when Lucinda writes:
“Tu le ton son temps, that’s what we’d say. We used to dance the night away.”

I interpret it to mean that they are all hanging out at the local bar, dancing and calling out for one of their favorite Cajun tunes.
“Hey! We wanna hear ‘Tu le ton son ton!’ “

Hope this helps settel this question.
Fretless