Stalder - Dreier, SUI | 2016 World Standard | R1 SF | Mark Stalder - Yulia Dreier, SUI, dance the Slow Foxtorto in round 1 of the 2016 World Standard on 12 November in Aarhus, DEN. world aarhus den round federation slow r1 yulia std total subscribe november sui sf mark stalder dreier 2016 wdsfdancesport sandard