Unless I have missed something, nobody has mentioned the practice of
getting undulation (over a range sufficient for short passages ) by
moving a slider a little from full-on position. I remember this was
common at OHS conventions from 1963 on. Mostly, players of small  19th-c
organs got by without the expense of an extra rank.

-- 
 Rodney Myrvaagnes
  [log in to unmask]

On Sat, May 18, 2013, at 2:53, James Lampert wrote:
> All this talk of undulating stops makes me wonder if we're not in for an 
> epidemic of undulant fever.
> 
> -- 

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