Ärtemarschen
Ärtemarschen is without doubt the best-known tune among fiddlers in Värmland. It is played in groups for marching, for weddings, for entertainment, Midsommar processions, and for jamming.
Because it is so popular there, it has also become a standard tune played in other parts of Sweden.
Here is a YouTube video of it being played in a Värmland church at a “wedding march” speed.
And here is a video of me playing it a bit faster.