"I imagine there's a market for total depression. I grew up on George Jones and that really dark stuff"

Brad Paisley's quote suggests that there is an audience for music that expresses unhappiness and anxiety. He is likely describing the c and w category, which typically includes songs about distress and loss. He particularly discusses George Jones, a c and w singer who was understood for his melancholic songs. This quote implies that Paisley grew up listening to Jones' music and was influenced by it. It likewise recommends that he thinks there is a market for music that expresses unhappiness and depression, which people are drawn to it. This might be because it enables them to associate with the emotions expressed in the music and to feel understood.