Instrument Name Not Showing...

[Ben]

Hi all,

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 and here is the code that shows my example:

\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!

instname.png
Description: PNG image