The conversation between human and AI assistant.
[|Human|] Tell me a few highlights about Madonna's impact on pop music.
[|AI|] Madonna is known worldwide as the top-selling female pop artist of all time. She has enjoyed global acclaim -- and criticism -- for her sometimes provocative work spanning over four decades. Her work includes recorded music, live performance, and several film credits.
[|Human|] 
Tell me a few highlights about Madonna's impact on pop music.