Age doesn’t necessarily denote musical prowess, but for My American Heart, a band who wrote their debut when most of the members were merely 16, making great music has only been augmented by three years of touring, practice and acquired knowledge. The San Diego fivesome’s dynamic, innovative second record reverberates with a sense of newfound wisdom and the sort of skill that comes only from that hard-earned experience, a reminder of how shockingly young the makers of the record actually are.