What makes Roll Deep by Hyuna notable?

'Roll Deep' marked a significant moment in Hyuna's career as it showcased her evolution into a more assertive and self-defined artist. The lead single '잘나가서 그래' became a commercial success, reflecting her growing influence within K-pop and earning positive reviews for its catchy production and empowering lyrics. By the time 'Roll Deep' was released in August 2015, Hyuna had already established herself as a prominent figure in K-pop through her work with 4Minute and successful solo endeavors. This album came after her acclaimed EP 'A+,' further solidifying her status as a solo artist amidst a competitive industry.