Instrument Name Not Appearing

[SoundsFromSound]

Hello list,

I am trying to get an instrument name to show beside a staff that begins in
the middle of a passage, but I'm not having success. I've attached a
screenshot, here is the code that shows my question:

\version "2.19.80"

\score {
  <<
    \new Staff = "Testing"
    \with { instrumentName = "Top"  }
    \relative c'' { c1 | c | c | c |  }
   
    \new StaffGroup
    \relative c'' {
      \new Staff \with { instrumentName = "Bottom"  }
      { c1 | c <<
      { c1 | d  }
     
      \new Staff \with { instrumentName = "Violin"            
            alignAboveContext = "Testing" }                               
          {  \once \omit Staff.TimeSignature
             c1 | b }
                    >>
      }
    }
  >>
}

Can someone please show me what I am doing wrong, and how I can get the
"Violin" instrument name to show up next to the topmost staff?

Thank you!

Attached:  instrname.png
<http://lilypond.1069038.n5.nabble.com/file/t3868/instrname.png>  



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composer | sound designer | asmr artist 
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