In your opinion, who is the greatest musical performer that's alive today?

It can be a musical performer who is part of a group or solo, or was in a group and is now solo (for example Sting). It can be based on their live performances, on their albums, on their songs, their ability to play an instrument or on anything you want to base it on. It could be a vocalist or someone who plays a musical instrument or someone who does both.

I’m asking this because today on the radio, they said that Justin Bieber tweeted yesterday that after the death of Prince he’s now the greatest performer alive. They said he quickly deleted the tweet. The guys on the radio were talking about how ludicrous it is that Justin Bieber thought for a minute that he’s now the greatest performer. Thad led me to this question.