Sleigh Bells photo by Petra Collins

Update (11/3, 1:28 p.m.): Producers Carl Falk and Rami Yacoub have responded to Sleigh Bells' accusation. They told Entertainment Weekly in a statement: "We did not use any samples in Demi Lovato's song 'Stars.’ Demi was also not involved with the production. She only wrote top line."

Update (11/3, 4:34 p.m.): A Sleigh Bells representative tells Rolling Stone that "the band feels their music has been sampled without proper clearance and are seeking all available remedies with [Lovato's record label] Island Records."

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Sleigh Bells have accused Demi Lovato of sampling two of their songs without permission, as Jezebel points out. "Demi Lovato flattered you guys sampled Infinity Guitars & Riot Rhythm for "Stars" but we were not contacted," the band's Derek Miller wrote on Twitter. "Gotta clear those." (A quick sampling of Sleigh Bells' mentions confirms that some of Lovato's fans are not enthused about the comparison.)

"Stars" appears on Lovato's new album, Confident. Both "Infinity Guitars" and "Riot Rhythm" are from Sleigh Bells' first album, Treats. Listen to all three songs below.

We've reached out to Lovato's representatives for comment.

Watch Sleigh Bells' video for "End of The Line" on Pitchfork.tv: