Demi Lovato Spills on Their Album Holy Fvck and Their Secret to Writing a Hit Song | Tonight Show

Demi Lovato talks about going back to their roots in the song "Skin of My Teeth," reveals the secret behind writing a hit song and shares their best vocal warmups with Jimmy.

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Demi Lovato Spills on Their Album Holy Fvck and Their Secret to Writing a Hit Song | Tonight Show
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