When there's pre-recorded music of the greatest artists in history, why hire a jazz band for a bar or restaurant? The vibrations of live jazz fill the space in a way that speakers simply can't. They bounce off of the walls, move the body, and penetrate the soul. That's how a room can literally feel like it's buzzing. It wakes you up from the routines of everyday life and its burdens like going to work, running errands, and taking care of the kids (joking).