y'all are stupid.....
it's Rappers Delight-"Sugar Hill Gang"
dat song created Hip-Hop

but modern day like newer shit I would have to say 2Pac-"How Long Will They Mourn Me" and Mobb Deep-"Shook Ones"....or Dr. Dre-"Forgot About Dre"

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<marquee>"Real lyricists don't even respect you or take you serious. It's not that we don't like you, we hate you, PERIOD."</marquee>