RE: flute vibrato

[Gifford, Paul <pgifford...>]

I don't have much to say on this, but my father, who studied flute
with Georges Barrere at Juilliard in the late '20s and '30s, felt that
vibrato should
be natural, rather than something consciously done, as became common
in postwar years (anybody know how this conscious vibrato
developed?---
Barrere was the leading flutist in the U.S. at that time).  This was
Barrere's position and probably was the standard view of the French
school too.  
Of course this has nothing to do with klezmer style.
 
Paul Gifford