Dr. Yen Lo Is A New York Hip-Hop Duo Consisting Of Brownsville Rapper Ka And Underground Producer Preservation. They Released Their First Collaborative Full-Length Album Days With Dr. Yen Lo In May 2015. The Name 'Dr. Yen Lo' Is A Reference To The Character Of The Same Name From The 1962 Political Thriller The Manchurian Candidate About A Korean War Hero Who Is Brainwashed By Communists And Ordered To Assassinate An American Politician.