After establishing herself as a K-pop dance diva to watch on her 2017 debut, CHUNG HA's second release solidifies her as a multifaceted star. "Roller Coaster" is a neon-tinged, electro-pop sparkler that's packed with unexpected shifts—much like its amusement-park ride inspiration. CHUNG HA touches on reggae-pop with "Do It" and brassy doo-wop on "Bad Boy," and even gets a chance to show off her tender vocal prowess with the unexpected closer, "Remind of You," which further highlights her versatility.