Hip hop has evolved over its roughly 30 years of popularity into one of the most divisive musical genres since. Mainstream, underground; egotistical, abstract; guest verses, breaks. Two things that remain consistent in all spectrums of the genre are beats and rhymes. This week, we’ll showcase tunes from the mp3.com vaults with enough beats, rhymes, and life to make you a fan out of each of them. Grab free downloads from Brooklyn’s Sareen and Mos Def, Kentucky’s veteran CunninLynguists, Inglewood’s Shawn Chrystopher, and more after the jump.