In the content markdown header:
[extra]
flatio_enabled = true
osmd_enabled = true
verovio_enabled = true
Then, in the body of the Markdown content file:
{{ osmd(id=1,
score_path="scores/bach-intervals/stacked-dims-plus-2-stave.xml") }}
{{ flatio(id=2
score_id="60b993ca1c5fff0014c01d3d") }}
{{ verovio(id=3,
score_path="scores/bach-intervals/stacked-dims-plus-2-stave.xml") }}
Which render as shown below.
Open Sheet Music Display:
I've had the most success and best performance with the Open Sheet Music Display score rendering.
Flat.io:
Noter that, in the case of the flat.io, you need to have uploaded your score to their service and pass not a local path as with the others, but instead a score id. One benefit of flat.io is the embedded MIDI player for all scores.
Verovio: