What makes It's Christmas Day by Roy Kim notable?

'It's Christmas Day' marked a seasonal entry into the K-pop genre, showcasing Roy Kim's vocal abilities and festive spirit. The song not only received positive reviews but also contributed to the growing popularity of K-pop holiday music, influencing other artists to explore similar seasonal releases. Released on January 1, 2014, 'It's Christmas Day' was Roy Kim's first holiday-themed single following the success of his debut album 'Love Love Love' in 2013. At this point in his career, Kim was solidifying his presence in the K-pop scene after winning 'K-pop Star' in 2012, leading to increased recognition and a dedicated fanbase.