Hi Juan, > So far, it has function great when outputting instrument parts, but when > I join them, each box is being drawn for the entire group (see image > below where boxes should be surrounding the black-head groups). As the > code is really obscure for me, I don't really see if there is an error > on me while notating the boxes, or if it's the code that takes into > account everything that is happening inside the staff group. Could > anyone tell me if grouping is done by default? If it is, what should I > need to alter in order to make the box adjust per instrument?
move the engraver from score to staff:
\context {
\Staff
\consists \musicBoxerEngraver % for spans
\consists \boxEngraver
}
You might also need something like `\override Box.Y-extent = #'(+inf.0 .
-inf.0)` to avoid outside-staff-handling to shift around stuff inside the box.
Cheers,
Tina
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