A list of the greatest songs of the 21st century has been released, with one outlet ranking a 2001 hit and another ranking a 16-year-old Kanye West song as the greatest song of the century. However, the specifics of the list, including the ranking and number of songs included, appear to vary across different outlets. The rankings have sparked discussion, with some outlets noting the limited representation of certain genres, such as metal, on the lists.