Once a year, Amsterdam's historic city center is transformed into Holland's most beautiful concert hall. At some 20 unique indoor and outdoor locations, national and international top musicians and new talent perform over 70 concerts. On pontoons in the canals, in secluded courtyards and historic period rooms of monumental canal houses, even in local residents' living rooms and roof gardens.

Couples are expected to line up on Tuesday evening at an annual international music festival in Oslo to have sex inside a tent while being filmed by a Korean artist, organizers said.