Substance810 is one of the finest producers/MCs in Michigan right now” - legends will never die

underground hip hop blog

Port Huron Emcee/Producer Substance810 Has Been Making Major Noise Since His Debut in Album in 2006, He is Definitely making A Name For Himself Being A Top Tier Lyricist and Producer” - Pat Deegan

DetroitRap.com

Substance810 is “Makin Waves” with a FULL BLAST of unstoppable HEAT featuring DJ Grazzhoppa! Experience the supreme power spitter on “Fortified!”” - mediamaverick

insomniac magazine

The Definition Of shows Substance810 as an emcee trying to elevate his rhymes above the average rapper and taking his polished beats to the next level with great usage of samples along with plenty of thump” - P80 Parks

Deeply Rooted Hip Hop

Checkmate! Michigan’s Substance810 takes control of the board on this dope cut lifted from his new Chuck Chan-produced EP “Chess Pieces”” - Ryan Proctor

Old To The New Ryan Proctors ...