Mountain Dew has been working hard to diversify in 2008, and with questionable results. Along with testing out a few short-lived flavors and lending its citrusy zest to Doritos, the caffeine machine has begun fancying itself as a platform for up-and-coming artists. The Green Label Sound has posted exclusive singles from Matt and Kim and the Cool Kids. Download them for free at Greenlabelsound.com, and keep an eye out for two more in the upcoming months. Looks like Pepsi’s marketing staff got this one right, but we’ll still pass on the chips.