force a line break in the middle of a measure

[Gianmaria Lari]

In the following code I force a line break in the middle of a measure

\version "2.19.82"

\new PianoStaff 

<<

  \new Staff {\partial 4 r4 b1 1 1 2.~4  }

  \new Staff {\partial 4 g4 g1 1 1 2. \bar"" \break \partial 4 4}

>>

(see image a1)

This is ok.

Now, I know it's musically wrong but I would like to know if there is any way to force a line break also in this other case (I highlighted the change):

\version "2.19.82"

\new PianoStaff 

<<

  \new Staff {\partial 4 r4 b1 1 1 1 }  

  \new Staff {\partial 4 g4 g1 1 1 2. \bar"" \break \partial 4 4}

>>

(see image a2)

Thank you, g.

a1.png
Description: PNG image

a2.png
Description: PNG image