I'm not familiar with the term Klezmer or its implications.
Then you have a whole 'nother musical genre to explore!
I would be surprised to hear klezmer and bluegrass mentioned together except that we have a fiddler friend who plays klezmer and bluegrass and everything in between.
Wow BG...thanks for outing Henry. Late 1800's/early 1900's history is so very interesting on many levels. Blues, Klezmer both use tonal 1/2 pitches, bless their hearts