The freestyle rap sensation Harry Mack went viral for his effortless flow and joins NBA on TNT to rhyme live in Studio J.

From neighborhood ciphers to the most notorious MC battles, "Freestyle: the Art of Rhyme" captures the electrifying energy of improvisational hip-hop--the rarely recorded art form of rhyming ...

Improvising in rap is often known as freestyle ... There are two types of freestyle: ‘Old-school’ freestyle, which involves rhymes that the rapper has already come up with, but doesn ...