write, and render sheet music notes in posts?
seems there are some js libs, wonder if easy way to add this support 
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The concept here is very similar to Discourse Math; I suspect it would not be onerous to do.
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I confirm. Implementation is fairly straightforward. 
You need a container, basic code, and sheet music to download (.musicxml).
One issue is downloading the .musicxml file; it will fail because of CORS origin.
I guess you would need an interface to upload it, and then you can render it with the local file.
I could not test the player; you must be a Github sponsor.
(I will see to make a theme component)
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so cool ! @Arkshine
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This came up in my feed this morning
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