Elon Musk's X Corp has filed a lawsuit against 18 major music publishers and the National Music Publishers' Association, alleging a conspiracy to block competition and force inflated licensing fees for musical works. X claims publishers refused to negotiate individual licenses, violating antitrust law. The National Music Publishers' Association stated X has infringed copyrights for years and its lawsuit is a distraction from publishers' rights. Sony Music referred to the association's statement, while Universal Music and Warner Chappell did not immediately comment.