Entities owning the copyrights to music created by the late pop star Prince had filed suit against Roc Nation, the entertainment company owned by rapper Jay Z, which is affiliated with the streaming music service Tidal. Plaintiffs NPG Records and NPG Music Publishing allege that Tidal and Roc Nation have engaged in copyright infringement by adding a series of 15 unauthorized Prince albums to the Tidal catalog this June. The case is filed in the U.S. District Court for the District of Minnesota.