After receiving much attention and love even before the release of his digital single, 2AM's Jo Kwon has finally staged his first-ever performance of The Day of Confessing My Love on today's Music Core! What started off as a sweet serenade to his on-screen wife, Brown Eyed Girls' Ga-In, soon sparked into a cute track that skyrocketed on various music charts. With his own witty humor added along to the addicting beats and bubbly melody, Jo Kwon definitely didn't disappoint as he showcased a one of a kind performance. Check out Jo Kwon's first-ever performance of his hit track on today's Music Core! Who got it right that Ga-In would show up?