Here are the different subscription plans.
IMPORTANT: You are allowed to use these films and the PDFs of the sheet music, but they may under no circumstances be printed (except for personal use), distributed or recorded without permission from Mia Marine.
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Skrap Ollas Polska efter Glysen
Polska efter Magnus Olsson - Learn the tune
Polska efter Magnus Olsson - Play Along version
Tiden by Mia Marine
Menuett efter Mattis Kollberg
Farängladagen by Mia Marine
You can find a whole bunch of them, on different topics, at Fiddle Academy. Here is one you can try for free. It is a lesson about improvising accompaniment, for people who are beginners at improvisation.
Concept lesson #2: Harmonic improvisation/Improvised accompaniment