Re: Dividing a measure with a dotted bar line

[Kevin Barry]

Any ideas for the time signatures?

As others have suggested you can place it in markup in its own dynamics context between the staves like this (it's not an elegant solution, but you only need to do it once):

\version "2.18.2"

fakeThreeFour = {

  \override Score.TimeSignature #'stencil = #ly:text-interface::print

  \override Score.TimeSignature #'text = \markup {

    \override #'(baseline-skip . 0) \column { \number 3 \number 4 }

  }

}

parenFiveFour = \markup {

  \concat \normal-text { \fontsize #5 \lower #1.25 (

   \override #'(baseline-skip . 0) \column { \number 5 \number 4 }

   \fontsize #5 \lower #1.25 )

 }

}

\new PianoStaff <<

  \new Staff {

    \time 5/4 \fakeThreeFour

    b b b \bar "!" b b

  }

  \new Dynamics {

    s -\tweak X-offset #-5 -\markup { \parenFiveFour }

  }

  \new Staff {

    \clef bass

    b b b b b

  }

>>