The foursome's debut album, Testing the Atmosphere, showcases twelve tracks perfectly suited to the wide range of teen emotions. For those in the throes of their first romance, there is "Oxygen," a sensitive piano ditty for young lovers. The album's first single, "Walking Disaster," is an anthem for the angst-ridden, with its alt-rock edge and lyrics that fairly scream self-doubt and confusion. Big 10-4's radio-friendly sound might be something you'd expect to hear in the background as your little sister watches Laguna Beach, but don't be surprised if you find yourself not only singing along but also learning every word. Alexandra Quiñones