Defining "underground" hip-hop is not an easy task, but whether it's that backpack rap from back in the day, some independent label making major moves, or just your local favorite, there's always been a plenty of music for fans of hip-hop who aren't into what's playing on the radio. Pigeons & Planes revisited some old favorites and put together a list of the best underground hip-hop albums. From Atmosphere to Company Flow, check out the list below.
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