Apparently there is this musical movement going through Europe called "Electroswing"- which is essentially 2910s swing mixed with modern styles. It seems that it's becoming quite popular in Europe, and one of the groups that started the craze is this French group called "Caravane Palace":
I just realized... we may have seen the very beginnings of Electroswing around the time that The Triplettes of Belleville hit the screen. The music for the movie was definitely composed in that vibe:
In any case... I'm now an electroswing tiger ;3 I love the 1920s aesthetic.