I have no idea who they are and their web page has very little information on it plus it is in German. But...... I like their style. Perhaps they all had proper jobs once upon a time and decided that playing jazz was more fun: hence the Mid Life of their name?
Swiss Dixie Jazzer “SDJ”
"Stage presence with closeness to the audience is our trademark, atmospheric and enjoyable joy of playing is our companion.
Our repertoire ranges from old-time jazz, Dixie and swing – peppered with Latin, funk, folk music and everything else that spontaneously comes to mind."
https://www.swissdixiejazzer.ch/
Dixieland One Step - Midlife Jazzband / Swiss Dixie Jazzer
De Seppel - Midlife Jazzband / Swiss Dixie Jazzer
Swiss Dixie Jazzer "Sweet Emma"
Royal Garden Blues - Midlife Jazzband / Swiss Dixie Jazzer
Swiss Dixie Jazzer "Jumpin' at the Woodside"