"Artists on this djrobblog list are ranked based on the following seven criteria: Musical Influence, Innovation/Invention, Longevity/Endurance, Record Sales/Chart Performance, Historic Significance/Accomplishments, Contribution to others' success, Awards/Recognition Artists were considered eligible regardless of genre. In other words, this is not strictly a ranking of soul or R&B/hip-hop artists. If a black musician made significant contributions to jazz, blues, reggae, country, rock or any other genre, he or she was eligible. This is not strictly a singer's list, either. Artists who also made strides as instrumentalists (several jazz musicians fell in this category) also qualified."
