From: pvezina@vmark.com (Philippe Vezina)  
                    
                
 
    Yes, John and Yoko did appear with Frank  and the Mothers at the same show
 that the Fillmore 71 album was recorded.They performed a song called
 'Scumbag' which was basically all three of  them screaming SCUMBAG at the
 top of their lungs.
               
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     The John and Yoko album "Sometime in New York City" which came out in 1972,
 is a 2 record set. The first album is studio cuts and the second album is
 live. If you can grab an original or fairly old copy like mine, you will see
 when you pull out the sleeve for album number 2, that it is the ZAPPA
 Fillmore  71 album cover. The sleeve is an exact replica of the Zappa album
 cover,  except John Lennon scribbled all over it and wrote down other stuff
 instead  of what Frank had wrote "obviously John wrote the correct songs
 from that album". Also if you open up the album jacket, you'll see a nice
 picture of Zappa (with guitar) and John and Yoko onstage at that Fillmore
 show.
               
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                            From: jjr@cbnewsb.cb.att.com (jeffrey.j.rocca)  
                    
                
 
    Yes, John and Yoko jammed with the Mothers at the Fillmore East.  But it is
 not captured on the _Fillmore East, June 1971_ album.  Two different mixes
 of the jam can be heard, one on John and Yoko's _Sometime in New York City_,
 the other on Zappa'a _Playground Psychotics_.
               
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And here is FZ own account of event  
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                  From: cpeq1@lucky.innet.com (Same as cpeq)  
                    
                
 
  
        This  is  the  second  of  2  Frank  Zappa  interviews  which  were
     transcribed  from  an  imported  CD  called "The Frank Zappa Interview
     Picture Disk".  According  to  my  closest  estimation  based  on  the
     interview's  context,  it must  have  been conducted sometime in early
     to mid 1984.
               
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       Q:  I would like to ask you 2 questions: one is... on "Sometime In New
     York City", the John Lennon and Yoko Ono?
               
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       Z: What about it?
               
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       Q: What was it? How did it come about and all that?
               
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       Z: The day before the show, a journalist in New York City woke me up -
     knocked  on  the  door  and is standing there with a tape recorder and
     goes:  "Frank,  I'd like to introduce you to John Lennon,"  you  know,
     waiting  for  me  to gasp and fall on the floor and I said "Well,  ok.
     Come on in." And we sat around and talked, and I think the first thing
     he  said  to me was "You're not as ugly as I thought you would be." So
     anyway, I thought he had a pretty good sense of humor so I invited him
     to come down and jam with us at the Fillmore East.
        We had already booked in a recording truck because we  were  making
     the  "Live  at the Fillmore" album at the time.  After they had sat in
     with us, an arrangement was made that we would both have access to the
     tapes.  He  wanted  to  release it with his mix and I had the right to
     release it with my mix - so that's how that one section came about.
        The bad part is,  there's a song that I wrote  called  "King  Kong"
     which  we  played  that night,  and I don't know whether it was Yoko's
     idea or John's idea but they changed the name  of  the  song  to  "Jam
     Rag", gave themselves writing and publishing credit on it, stuck it on
     an album and never paid me.  It was obviously not a jam session song -
     its  got  a melody,  its got a bass line,  it's obviously an organized
     song - little bit disappointing. I've never released my version of the
     mixes of that night.
               
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       Q: Do you ever intend to?
               
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       Z:  One day yeah - but it would be drastically different because there
     were things that were edited out of their version  and  certain  words
     that  were being sung that were removed because of the editorial slant
     that they wanted to apply to  the  material  and  I  have  a  slightly
     different viewpoint on it.
               
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