Hip-hop is built on the magic that happens when a rhyme is added to a beat, and over the years certain combinations of MCs and producers have proven particularly good at conjuring that magic, from Snoop and Dre to Biggie and Puff

Today, when many rap albums are a patchwork of contributions from a dozen different producers, true rapper-producer chemistry is increasingly rare and precious. The Lifetime series The Rap Game is all about finding the next young hip-hop star, with host Jermaine Dupri having nurtured many rappers (and singers) to greatness.

Here are the 10 best rapper-producer relationships right now, all of the duos pushing each other to make music history.