I think Klezmer has died because jewish people dont play those instruments anymore, Not many frum people play anything except Keyboard, Guitar or Drums
Klezmer used alot of wind instruments, I looked at Wikipedia and it said Clarinet and Trumpet (Also Saxophone), those are what I was thinking of
You dont have to be jewish to play Klezmer, its just the style. The Saxophone does not make one a Klezmer, Its the style not instrument