It's not every day that Metro Boomin' offers up a straight-up instrumental without a feature attached. The producer has been working with just about everybody in the Atlanta rap scene, and recently produced Future's entire Monster mixtape. Today he takes a break from the hip-hopÂ acts with a dope instrumental "Metropolis." He hasn't dropped off a full solo project since 19 & Boomin' in 2013, but he's currently prepping a collabo album with Young Thug (Metro Thuggin) and let's hope the follow-up to 19 & Boomin' is onÂ the way too. Last we spoke to the producer he was planning 20 & Boomin', but now that he's 21, he might need to adjust that.