Best Songs We Heard This Week: Best Songs We Heard This Week: Grace Potter, Ill Blu, City and Colour & MoreBest Songs We Heard This Week: Best Songs We Heard This Week: Grace Potter, Ill Blu, City and Colour & MoreNine genre-spanning songs the PopCrush editors were obsessed with this week, from Grace Potter, City and Colour, FKA twigs and more.PopCrush StaffPopCrush Staff