http://lsr.di.unimi.it/LSR/Item?id=1029
This reminds me that every thing is easy when we know how and often impossible when we do not know how.
I tried to find a swing tempo marking in snippets and didn't find one.
I tried using this 'easy example' and this is the best I could do:
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markup { \small { \note #"8" #UP + \note #"8" #UP =
\note #"4" #UP + \note #"8" #UP }}
% Or maybe
\markup{ \small { \note #"8" #UP + \note #"8" #UP "=" \note #"4" #UP \note #"8" #UP }}
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I am clueless on how to add the triplet bracket to the top
as this didn't work
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%trying to put this in the above markup didn't work
\tuplet 3/2 { c d}
\tuplet 3/2 { \note #"4" #UP \note #"8" #UP}
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so using Frescabaldi / Lilypond I exported the required element as SVG and using inkscape created these images (see attachmenbts)
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also I found mention of EZNOTES... versus \ezscore confusing? in
http://lsr.di.unimi.it/LSR/Item?id=1029