Buffalo Buffalo

Upon entering the bar, sounds are apparent. The sounds appear to be different at different locations within the room. In addition to people's voices and the sound of drinks being served, a quiet and persistent tone can be heard. How long it has been going on for is unclear. In some places it appears to be louder. In other places it appears to be quieter. In some places the tone's pitch appears to be higher. In other places it appears to be lower. When standing still the tone does not appear to change over time.