Summer music Wednesday continues here in this corner of the Internet, and also wherever you live, unless you live in the Southern Hemisphere, because then it's much much closer to winter where you are. Now that I've explained seasonal differences, how about letting Jon Lajoie explain how the music industry manufacturers and markets popular music to the kids (and adults who think like kids)? Alrighty! It's Lajoie's new song, "Pop Song." And yes, that's Lajoie in all of the roles. Except for the hot girl. I think. Roll it!