They have a webpage here: http://www.sangefrabroen.dk unfortunately it is only written in danish.
But you can just show up at sundays in Brorsons Kirke Rantzausgade 49 at Nørrebro in Copenhagen or in Sandholm-lejren north of Copenhagen.
The purpose of the quire is to build bridge between foreigners and danish people.
At Brooson Kirke at 6 PM there will also be served food and everybody is eating together.
Adress of Brorsons Kirke:
http://firma.eniro.dk/query/referring_w ... _area/2200