Broadway has turned into our own Bourbon St. LOTS of clubs and/or tourist traps, but for live music, I'd check out Robert's Western Wear and of course the evergreen Tootsie's.
A few blocks north on 4th Avenue is one of Pat Martin's Martin's BBQ, definitely worth the stop.
The best soul food is Swett's on 28th Avenue, period. Arnold's meat and 3 has closed.
The Musician's Hall of Fame on James Robertson is absolutely worth the price of admission, as is the Museum of Black Music (across from the Ryman Auditorium on 5th, what a delicious irony) and the Counrty Music Hall of Fame, a block over from Broadway near the Schermerhorn Symphony Center.
Vintage guitars are easy as leaving downtown on 8th Avenue, you come to Carter Vintage, about 10 blocks further is George Gruhn's, and finally Rumble Seat past Gruhn's, these are all within about a 5 mile stretch. Rumble Seat is mostly all electric and rock and roll, Gruhn's and Carter's everything from harp guitars to Dan Armstrongs. The best 'new' gear store is Corner Music out on Dickerson Road at Ewing, not far off I65. Downtown also is home to the Gibson Garage.
East Nashville (roughly the neighborhood on the other side of Titan stadium from downtown) and Germantown (north of downtown on the other side of the park and the Sounds stadium) are the two gentrified new cool places with lots of restaurants, shops, and Tesla and carbon bicycle types. Favorite stop is a little Italian Sandwich shop Little Hats on 4th in Germantown, and Five Points or Boombozz pizza joints in East Nashville around 5 Points. And of course we now have several Whole Foods, Trader Joes, the local organic Turnip Truck, and thank goodness Publix followed me up here from Florida. And everything from notels to the W, the JW Marriott, even a Four Seasons.
Nashville is a boom town of the first order these days. When I moved here in 1990, it was the end of the Good Old Boys days, and now we are home to the largest Kurdish community outside the middle east and you have several choices in Ethiopian restaurants, and a huge Latin community. Anybody coming here looking for HeeHaw and Cracker Barrels on every corner is in for a rude awakening. Just not gonna see someone in a Caddy convertible with steer horns and rhinestones any more.
I'm a full-time caregiver for my wife, so, as they say, we don't get out like we used to, but this is still by far my favorite place I've lived, people here are just nice.
It is, though, still a big city with some crime and a growing homeless population, so be careful here as you would in any large city. But there's a lot to do and see, and hope you have a great time.
All the Best,
JW