Earlier in the evening the club offers lounge music with a pianist and singer. Later, the lads hit the stage for some rock. When they are done, there's singing. My tolerance for out of tune amateurs is limited so we didn't stay for that. I think that there may be nights when livelier entertainment is on offer - I must go back some time and see it through to closing time.
Upstairs is karaoke. The girls, dressed in identical outfits, take breaks in their own glass-walled room on the ground floor.
The food on offer is very acceptable and some steak dishes are on the menu. I thought that prices were reasonable but note that you will pay for the entertainment through the drinks prices. Even so, they are reasonable given the quality of the venue.
Next to The One Club & Restaurant is the Florida Hotel. I was told that the two establishments are under common ownership. We had no time to check out this hotel but it's a possible alternative to the Central.
If you are passing through Hat Yai, take time in the evening to check out the Club.
The club has no website but You Tube has video clips. Try a Google search for 'theoneclub hat yai'. Here's one of the saucier clips that I found.