One of the rewards for donating to the Dog Shrine is a boom box. By interacting with it, you have the option to skip to the "next" song, and it is suggested that these songs may have some effect. I believe I already know the answer to these questions, but for the sake of thoroughness: are there a finite number of songs on the boom box, and if so, how many are there? What effect, if any, do these songs have?

One of the rewards for donating to the Dog Shrine is a boom box. By interacting with it, you have the option to skip to the "next" song, and it is suggested that these songs may have some effect.

Are there a finite number of songs on the boom box, and if so, how many are there? What effect, if any, do these songs have?