The apparent feud between singer R. Kelly and rapper Jay-Z has made its way into court. Kelly is suing for 75 million dollars, alleging that "spite and jealousy" prompted violence that forced Kelly off their national tour. The breach of contract suit claims that Jay-Z was bothered because Kelly was the higher-paid performer. Court papers filed in New York also name the promoter as a defendant. The suit alleges that the animosity led to technical problems, violence against Kelly, and threats to force the promoter to drop him. A statement from Island Def Jam Records, which Jay-Z is slated to take over, blamed Kelly's "lack of professionalism and unpredictable behavior" for cancellation of the tour. The two performers were in the middle of a 40-city tour.