According to The Hollywood Reporter, in the suit filed on Monday via California federal court, Sleigh Bells' Alexis Krauss and Derek Miller specify "signal decay and other sonic signatures" that characterise "virtually identical content" and "transcend the realm of coincidence."

The complaint names Lovato, UMG Recordings and producers Carl Falk and Rami Yacoub as defendants. Representatives for Lovato and Sleigh Bells declined to comment on the filing, though Falk and Yacoub told Rolling Stone last year, at the time of the initial accusation, "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."

In November, following the release of 'Stars,' Sleigh Bells tweeted at Lovato about the similarities, also mentioning their song 'Riot Rhythm.'

"Flattered you guys sampled 'Infinity Guitars' and 'Riot Rhythm' for 'Stars' but we were not contacted," they wrote. "Gotta clear those."

"I can confirm 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," Sleigh Bells' rep told Rolling Stone last year.

Listen to both tracks below and make up your own mind: