AOA Bring Back A Classic K

KpopStarzAOA Bring Back A Classic K-Pop Vibe With "Heart Attack'KpopStarz“This song really has that classic 2010-2012 K-pop feel, like something After School or SISTAR would've done,” wrote ARMOR15 in a comment posted on Monday to the video as well. “I really miss this kind of sound and I'm glad to see it being brought back.”.