The three of us visiting this museum together included a big fan of the current country music, one who isn't much of a country music fan but does like some of the older music like Johnny Cash, and one who was pretty much indifferent to all of it. Each of us greatly enjoyed this fun site.
The Country Music Hall of Fame covers the gamut from the early days up country music up to the present. There are changing exhibits, but also a lot on the history of country with displays that include costumes, instruments, audio, and video. The general feel is very much upbeat, emphasizing the fun of country music and its affect on the lives of its fans.
I was particularly interested in seeing all of the interaction between the music and the visual aspects, including costumes, cars, movies, videos, and television. My father was a fan of the old "Hee Haw" show and seeing some of the old clips reminded me of all the corny jokes and made me realize how musically talented many of the artists were even as they goofed around.
Some highlights for me included movie clips shown on large screens involving early country music, including films of dancing and a musical with the line "I Want to Be a Cowboy's Sweetheart." The elaborate costumes were fun to look at. They had two great cars, one built for Elvis Presley and another for Webb Pierce with revolvers for door handles, longhorns on the grill and a saddle for the center console. It has to be seen to be believed.
Some reviews here note the emphasis on various artists they might not like. True, there are more items from some artists from others, but I can only assume that the museum displays what it receives and can reasonably acquire. They had some Johnny Cash items, but not far away there is the Johnny Cash Museum and I've seen his costumes as far away as in the Musical Instrument Museum in Phoenix. There is also a Glenn Campbell museum nearby. I'd say have fun with what is on display, skip (after trying just a little) of what you don't, and keep looking if you don't find what you want to see.
The African American Museum is only a few blocks away. We got two dollars off of our admission here by going there first. We'd recommend going to both. I was surprised more by what the two museums had in common than where they differed, but both are highly educational and fun experiences.