In 2003, T.I. and other Atlanta rappers created new subgenre of rap: trap music. Twenty years later, its influence is everywhere. About two minutes into the song, "Y'all Scared," Andre 3000 of OutKast ...

Trap gets thrown around so casually that almost any rap song ends up wearing the label. You hear someone rapping over a beat with drums? That’s trap. A song has a heavy bassline? Trap. A rapper uses ...