Photo of Florence Welch on 'The Tonight Show,' by Douglas Gorentstein

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Before she returns stateside next month for Austin City Limits Music Festival and a handful of North American shows, Florence Welch (aka Florence + the Machine) has delivered an alluring cover of "Where Are Ü Now," Diplo and Skillrex's (aka Jack Ü) collaboration with Justin Bieber.

Welch performance of the track, which came during her recent appearance on BBC Radio 1's "Live Lounge," can be heard below (skip to the 23:15 mark).