The day after Lady Gaga performed at a Biden-Harris campaign event, social media users falsely accused her of witchcraft. There's no evidence.

With her explosive emergence in the late '00s, Gaga raised the bar for all facets of pop superstardom, while her continued evolution has kept her vital into the 2020s.

On today's (Nov. 6) episode of the Greatest Pop Stars of the 21st Century podcast, we kick off the top five of our list with a pop star who lit up the entire music world of the late '00s and early ...