It does have criteria for listing. >A piece of music needs to have been notable, popular, or memorable to be deemed the "worst ever", or it would be unlikely t

It does have criteria for listing. >A piece of music needs to have been notable, popular, or memorable to be deemed the "worst ever", or it would be unlikely to top all-time public polls a few years after it was released. That whittles down the infinite amount of music composed and recorded to a manageable list from which the worst songs can be found.