"La java bleue", "Mon amant de St Jean" "Un gamin d'Paris" and/or "Ah le petit vin blanc" would be perfect on accordions. If you wouldn't know them, put the titles into Google and click the bmarcore.club.fr site, they have mp3 samples. The 3 first are "valses-musettes" and they really make you feel like walzing at full speed -well, it's what they do to me!- they're from the early 40's, the last one from 1951