I don't know if it is still that way, but McGoo's in Tulsa had a live music stage adjacent to the pool room as well. A few years back I was spending some time checking out pool rooms between Texas and Wisconsin, and I spent a few pleasant days at McGoo's. As soon as the band opened up on Saturday night, though, I was out of there, and on my way to Wichita the next morning.
Miller Time Billiards in Davenport Iowa did live music in a separate area of the building many (35) years ago - maybe still do. Although you could hear it in the pool room it wasn't obtrusive or maybe I was still young enough to fade it.