Hosted by Kimberly Williams-Paisley and Blair Garner, the inaugural Disco Party to benefit the Alzheimer’s Association kicked off CMA Fest week on June 4 at Nashville’s Wildhorse Saloon. Brad Paisley, Hunter Hayes, Charles Esten, Lindsay Ell, Chuck Wicks, Jerrod Niemann, Jamie O’Neal, High Valley, Ryan Kinder, Todd O’Neill and CJ Solar donned their best disco-era…