The girls' trajectory from eager Stockholm youths creating early templates for their hyperkinetic pop to playing to a crowd of 20,000 at Madison Square Garden clocks in at just over three years - an impressive alacrity that should keep other musicmakers on their toes. Jawo and Hjelt worked ceaselessly, collaborating with high-caliber producers Patrick Berger, The Knocks, and Elof Loelv to create a distinctively dramatic sound - bright and dark in one, combining chanted choruses and live but mechanized drums with their signature 'bittersweet' lyrics.