For no particular reason except that it's fun, here's a bit more on klezmer crossover. Start here:
That's "Der Shtiller Bulgar," recorded at
last year's blogapalooza in Palo Alto a concert of the Abe Schwartz Band in New York City in 1918, and if you hear the strains of the Benny Goodman orchestra here, you are not wrong. Trumpeter Ziggy Elman massaged it into "We Meet and the Angels Sing," made famous by Elman and later by Eydie Gorme (here's an Eydie rendition with some lovely nostalgia shots of old New York).
For comparison, take a listen to the first bars of George Gershwin's "Rhapsody in Blue" and tell me you can't hear the klezmer echoes:
Finally, for those who said it couldn't be done--klezmer bluegrass: