Click the flag more than once, or the swap button won't work for the images (idk why) You can either press the "Swap button" in the top right corner, or press spacebar to switch between songs that sound similar. You can change the songs being played and also the images that move across the screen. My suggestion for songs, though, is that they have to have a similar tune.
I made everything in this project, even the visuals and thumbnail. (Although I forgot to mention that the music is made by flipline studios) Papa's Cupcakeria and Papa Louie 2 : When Burgers Attack, are both flash games developed by flipline studios.