[Avodah] Saying Hallel responsively at the Seder

[SBA]

From: Seth Mandel < >
The Shulhan Arukh says in Orah Hayyim 479:1 that one is required to try to
have a zimmun for the seder.  The R'MO adds that this is so that people can
read sections in Hallel responsively...The R'MO considers this so important
that he allows bringing in someone from the outside who has not been at the
rest of the Seder.
.....

RY Emden writes "v'ein tzorich likros mibayis achar, veday be'ishtoy uvonov
shehigiu lechinuch sheyaanu achrov.."

>>I confess that, although I have been to lots of different places and
communities, my experience with S'dorim is limited.  ... I have never seen
this responsive reading done, outside of by RYBS.  I have also asked someone
who is very knowledgeable about Hungarian customs, and he confirmed that, as
far as he knew, there was no custom to read any part of Hallel responsively
in Hungary.  ... So: does anyone know of any communities where they
practiced responsive reading of Hallel during the Seder?  
>>

I had the zechus -for 4 years - to be a guest of the late Nitra Rov zt'l in
Mt Kisco for 8 (beautiful) sedorim. He, of course, led the seder and we most
definitely said the Hallel responsively. Yes, it was a surprise for me too,
as my late father z'l - whose sedorim were the only other ones that I
remembered, did not do so. 
And the Nitra Rov zt'l 'feered' the seder EXACTLY according to the minhogim
of his father Rav Shmuel Dovid Ungar zt'l. 

SBA