Credited with creating the Country Rock genre, and a one-half of one of the most successful duos of the 1970s, a former member of Buffalo Springfield and Poco, Jim Messina is a legend. See Jim Messina Sept 29 at 8pm at The Auditorium at the Douglass.Credited with creating the Country Rock genre, and a one-half of one of the most successful duos of the 1970s, a former member of Buffalo Springfield and Poco, Jim Messina is a legend. See Jim Messina Sept 29 at 8pm at The Auditorium at the Douglass.