Bincika Chu~♡ - The 1st Single na f(x), wanda aka saki a ranar 03/11/2009. Kundin waƙoƙi 3 wanda ya haɗa da 'Chu~♡', 'Step By Me', 'You Are My Destiny (Sung By f(Luna+Krystal))'. Samu cikakken kididdigar yawo, nazarin kowace waƙa, da ma'aunin shiga na masu sauraro.
