THose pesky names again:

Duson Waltz-Aldus Roger
Bayou Chene-Iry Lejeune
La Valse De St. Landry-Austin Pitre
La Valse De St. Landry- Joe Falcon
Dimanche Apres Mide-Bois Sec Ardoin

Probably more. Jesse Lege recorded a La Valse De St. Landry that is a different tune.

Merci les amis!!!!

I found some of those versions already. You're right Bryan about the name. i was surprised not to find this waltz played in youtube under the name of Opelousas or St.Landry. Suddenly you change the name and....voilá. Magic!
All versions fairly similar. That will help the work on that second part

Merci fo the help
Miquel