One way to entrench yourself into immortality in the rap game is by flexing your lyrical muscle. That means by spewing flawless bars at any given moment. Only a selected few have the extra chromosome within their bodies to possess such an innate gift.  Rappers like Jay Z, Eminem, Big L, G-Unit, Fabolous, Big Sean, and more, have all exuded their lyrical finesse on the radio.  While some fumbled under pressure after being placed in the lion's den, others walked out unscathed. If you really want to be a rapper, you have to understand the fundamentals. Check some of the best radio freestyles ever. Get your bars up folks.

Kanye West & Pusha T - Funkmaster Flex Freestyle

Fabolous - Funkmaster Flex Freestyle

MMG - Funkmaster Flex Freestyle

Childish Gambino - Sway In The Morning

Jay-Z - Grammy Family Freestyle With Funkmaster Flex

Slaughterhouse - Funkmaster Flex Freestyle

Slaughterhouse - Tim Westwood Freestyle

Eminem - Tim Westwood Freestyle

Kid Cudi - Tim Westwood Freestyle

The Diplomats (Jr. Writer, Cam'ron, Juelz Santana) - Hot 97 Freestyle

Joe Budden - Green Lantern Freestyle

Jay-Z - Dear Summer Funkmaster Freestyle

Big L & Jay-Z - Stretch & Bobbito Freestyle

King Los - Sway In The Morning 5 Fingers Of Death Freestyle

J.Cole & XV - DJ Enuff Alistradio Freestyle

Logic - Sway In The Morning 5 Fingers of Death Freestyle

Lupe Fiasco - Tim Westwood Freestyle 

G-Unit - Funkmaster Flex Freestyle (2014)

G-Unit - Funkmaster Flex Freestyle (2003)

Kendrick Lamar - Funkmaster Flex Freestyle

Big Sean - Cosmic Kev Freestyle

Fabolous - Green Lantern Freestyle

Jay Z & Roc-A-Fella Freestyle - Funkmaster Flex (2001)

Cam'ron, J.R. Writer, & Hell Rell - Funkmaster Flex

Black Hippy - Toca Tuesdays Freestyle

Jadakiss - 92Q Freestyle

Lloyd Banks - Funkmaster Flex 

Eminem - Wake Up Show Freestyle

Notorious B.I.G - Wake Up Show Freestyle

A$AP Mob - Funkmaster Flex Freestyle

Eminem, Mr. Porter, & Royce Da 5'9 - Tim Westwood Freestyle

Fred The Godson - Funkmaster Flex Freestyle