A $70 million infusion is key to the project: The money comes from a combination of donors, including Murphy Oil Corporation, the Arkansas Economic Development Commission and the Walton Family Foundation. The first phase of the initiative, the $54 million, six-block Murphy Arts District in downtown El Dorado, is making its debut on Sept. 27. The district’s five-day opening celebration will have performances by artists like Brad Paisley, Smokey Robinson, Ludacris and the hip-hop trio Migos.