Mumford & Sons star MARCUS Mumford and his bandmates gather around charred wood backstage at gigs to help them hit the high notes onstage.
The I Will Wait hitmakers have discovered burning palo santo wood before concerts helps to relieve nervous tension and sore throats.
And Mumford insists the fumes of the South American wood is the only thing that helps ease the headaches he suffers before concerts.
He tells Rolling Stone magazine, "I've tried everything, pills, even went and had my brain scanned."
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