. . . was copied in Lovato’s “Stars”:
Sleigh Bells may have a case if their track was actually sampled (it does not sound like it was to my ears), but it is rare to win a copyright case based on rhythm alone.
Yes, technically rhythms can be copyrighted, but if Bo Diddley has never been remunerated for any of the many songs throughout rock history that have featured the “Bo Diddley beat,” good luck convincing a court that a clap track is uniquely yours and has never rocked high school bleachers.