Take a group of men from the northern Finnish town of Oulu - population 100,000 - dress them in dark suits with black ties made from the inner tubes of car tyres.
Next, send them out on to the ice floes of the frozen Baltic and get them to shout - in choral unison - at a stranded 10,000-ton ice breaking vessel, and you have got something called Mieskuoro Huutajat.