Richy Januchowski

Why was Mckensie dancing to 80's genre music when "call me maybe "" was clearly from 2012 by Carly Rae Jepson ? If the judges are so smart ,how come they didn't know,or even recognize this ? My wife ,and daughter religiously watch this show,and my daughter is 14 (she has been dancing since she was three),and also dances competition. She caught this immediately! Maybe their teacher should take a music appreciation class! 101!