I'm trying to recall a film I saw at a Chicago film fest, probably 2010-2018. I believe it is from Argentina or Cuba, or another Latin country in South America. A man, aged 30s-40s, is part of a small military or government band. He does not have a lot of money. He hears of a music contest and takes out some old songs he wrote when he was courting his wife. Their relationship seems less loving now. He wants to enter the contest and needs to pay the entry fee so asks his boss to pay him in a timely manner, or maybe for an advance, and probably also to take time off out for the contest. He hides a paycheck from his wife. Later we find the music contest is on the same day when the band needs to play at an event in Greenland or Iceland or some cold country like that. The film ends with the man exiting a small plane and standing in a tundra-like landscape. I might have misremembered some things, but any help is appreciated. Thanks in advance!