Grammy-winners Willie Nelson and Alison Krauss & Union Station Featuring Jerry Douglas kick off a 35-city tour together for the first time and make a stop at Ravinia set for July 12, 2014. They will be joined by special guest singer/songwriter Jason Isbell. Nelson performed to a sold-out audience at Ravinia last summer, and Krauss most recently performed here in a sold-out concert with Robert Plant. The complete Ravinia season will be announced on Feb. 27 at Ravinia.org.