Not even Florence and the Machine can resist Jack Ü. The British singer covered "Where Are Ü Now" for BBC Radio 1's Live Lounge. This take is more haunting than the Justin Bieber-featuring original, with her low vocals and stripped-down approach. But—and this is great—the band even replicated that playful, flutelike squiggle that Skrillex called "the dolphin," despite it actually being Justin's voice manipulated. Listen below.