Isaac Hayes is an enormous restaurant/club in the Peabody Mall. I have been there for both dinner and entertainment and would recommend it for both. If you come at the right time, you can miss the cover required for the music but still listen. Granted, you do have to buy dinner, but it’s worth it. They have live jazz, blues, or karaoke (Wednesday, I believe) almost every night, so you can always find something to listen to.
The food is good old Southern food with a twist. The portions are pretty large, and you get your choice of sides. I would suggest one of their specialty cocktails, as well as the brisket. We also have had the Rib Ticklers appetizer, and it was pretty good. The sauce on the pulled-pork dinner was very good. The meat was very tender, and the sauce was the perfect balance. My companion had the chicken, and it was cooked just right! The chicken was juicy (not dried out), and the seasoning made it the perfect combo. You get your choice of two sides and cornbread.
In addition, I have been to a private party here and would suggest it if you are looking for a large space to rent out! The food was good, the bar was good, and the waitstaff was amazing.