Colin Douglas Gray / MTV

T-Pain's New Mixtape Will Remind You How Crucial He Is To Music

The Iron Way is here.

You can pretty much draw a distinct -- and maybe biblical -- line in pop music: before T-Pain and after T-Pain.

The Rappa Ternt Sanga first blessed us with his auto-tuned melodies in 2005 and popular music hasn't been the same since. Kanye West, Diddy, Chris Brown and Britney Spears have all taken a page out of Pain's book and newer stars like Future and PartyNextDoor have sure traces of influence.

OK, so the last few years haven't been kind to Pain. After Jay Z dropped "D.O.A. (Death of Auto-tune)" in 2009 things got a bit rough, but T-Pain is mounting a modest comeback.

2013's "Up Down (Do This All Day)" was a Billboard hit and last year he wowed the Internet when he teamed with NPR and sang a few acoustic selections, showing off his beautiful, non-auto-tuned voice.

Now, for Pain's next trick, he's teamed with DJ Drama for his new mixtape, The Iron Way which he released for free online on Friday (Mar. 27).

On the opener "Kill These N---as," Pain gets really aggressive before he slows it down with The-Dream on the lovely "Let Your Hair Down." The songwriting gets real clever on the very 2015 "Hashtag," where Pain sings of the stress that social media puts relationships, and then on "The King" he continues his reign with Bun B and Big K.R.I.T.

The tape does boast a whopping 21-tracks, and truthfully it could've been trimmed down, but it's still pretty remarkable.