What is the birth name of Ryan Lewis's partner on "This Unruly Mess I've Made"?
Macklemore:  He has collaborated with producer Ryan Lewis as Macklemore & Ryan Lewis. Ryan Lewis: Ryan S. Lewis (born March 25, 1988) is an American DJ, musician, record producer, videographer, photographer, graphic designer, music video director, and rapper. Ryan Lewis:  Along with producing his own album titled "Instrumentals", Lewis produced the albums "The VS. EP" (2009), "The Heist" (2012), and "This Unruly Mess I've Made" (2016) as part of the duo Macklemore & Ryan Lewis.
i don't know