There are a number of family-friendly attractions that the entire family will enjoy while staying in the Music City.  The Grand Ole Opry is one of the best known attractions in town http://www.opry.com/  and even if no performances are underway while you're there, there is an attached museum on the property dedicated to the country music greats who have starred there over the years. Country fans may also want to make a visit to the Ryman Theater on Fifth Avenue North, which was the original home of the Grand Old Opry. Like the current location of the Opry, the Ryman holds exhibits that visitors can view during the day, and then holds musica performances by night. 
     Other famous attractions include , the Country Music Hall of Fame http://www.countrymusichalloffame.com...  plus the Willie Nelson and Friends Museum.  For a break from the music scene, try the Tennessee State Museum http://www.tnmuseum.org/  or the Tennessee Sports Hall of Fame.  Other spots for family fun include the Nashville Zoo and the Nashville Shores Water Park. http://www.nashvilleshores.com/