Sleigh Bells have accused Demi Lovato of using two unauthorised samples on her song 'Stars'.
The band's Derek Miller made the claim on Twitter, writing that: "Demi Lovato flattered you guys sampled Infinity Guitars & Riot Rhythm for "Stars" but we were not contacted."
The musician then added, simply: "Gotta clear those."
As yet, Demi Lovato has not commented on the claims - 'Stars' appears on her new album 'Confident'. Compare / contrast the songs below.