In the 1960's, Heavy Metal music was developed.
The Bezirk Dornbirn is an administrative district -LRB- Bezirk -RRB- in Vorarlberg , Austria .. Vorarlberg. Vorarlberg. Bezirk. Bezirk. Austria. Austria. Dornbirn. Dornbirn. A rather young district , it was separated from the Feldkirch district in 1969 .. Feldkirch. Feldkirch ( district ). The area of the district is 172.7 km ² , the population 82,721 -LRB- January 1 , 2012 -RRB- , which makes a population density of 479 persons per km ² .. The administrative center of the district is Dornbirn .. Dornbirn. Dornbirn