For a certain kind of 21st century liberal, the fight for gender equality in pop has already been won. Adele is the world’s best-selling singer-songwriter. Amy Winehouse is, according to broadsheet lore, the tragically posthumous Voice of a Generation. Nicki Minaj rules imperiously over the rap game, and Florence and the Machine is the doyenne of neo-pastoral hipster chic. In the floodlit mainstream of the 2010s mediascape, it seems that the girls have got all bases covered.