For music lovers, this is a list of the most popular musical artists of the 21st century. As the music business continues to crumble (or evolve, depending on your point of view), the sounds that appeal to people are changing by the day. Pop music, which once consisted of mainstream rock music, is now dominated by hip hop, EDM and R&B. While the names may not be familiar to older fans, many of these names for the younger generation are dominant.Who are the most popular musicians of the 21st century? Take a look at this list and you'll recognize some of the biggest names in music, and you won't be disappointed. These famous 21st century music artists may not be the greatest singers or dancers in the world, but they've all managed to carve out a unique niche in the industry and become household names along the way. Will their fame stand the test of time? There's no way to know. But for now, these are some of the great artists who are popular in today's music scene.