The second song is indeed Mon Vieux Wagon, but it started with another one and I had listen to a lot but still with no result :-(


Of course Marc was the first who found it , great and thanks

The first song is Si Tu Veux Amuser (If You Want to Have Fun)
Found it on a CD from the Savoy Doucet Cajun band Sam's Big Rooster
Also with singing and Lyrics
I can't find other versions till now.

At 1:23, it's the Eunice Two-step (to my ears, at least).

http://npmusic.org/Robert_Jardell_Eunice_Two_Step.mp3