If I was asked to describe the Hutsul caroling tradition in one sentence, I would say that it is completely out of this world. When experienced for the first time, it is hard to believe that it is happening in the 21st century and these people use cars, mobile phones, electricity and other attributes of civilization.
To begin with, (adult) Hutsul caroling is done by married men only; the men announce their arrival by blowing in trembitas and horns; the carols are extremely old, extremely long and are sung to the accompaniment of a fiddle.
Hutsuls carol up to two weeks: a group of carolers won’t quit until every house in their corner of the village is visited. Many families invite carolers inside for food and drink, hence, caroling in one house can easily last the whole evening and turn into a party. Probably because of this, carolers often have musical instruments (a fiddle and a bayan at the least.) Thus, it is not surprising that Hutsuls start caroling on Christmas (January 7) and often won't finish before January 19 (The Blessing of the Water holiday, or Epiphany).
Unfortunately, as many other Hutsul traditions, this one is also slowly fading away.
A Hutsul wedding in Shepit, part 1