Turning off selected spanbars in a Grandstaff

[Andrew Bernard]

Please refer to the attached score. Is it possible to turn of just the
span bars between the top two systems and the bottom two? We want to
keep the system start span bar as this is a string quartet, but in
this polymetric section the span bars give a misleading impression of
synchrony between the top two parts and the bottom two. [Before people
start commenting this is musical nonsense you find such polymeter in
composers like Elliot Carter.]

Andrew

spanbars.png
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