Singer Jay Sera will release her new digital single "Goodbye, Those Days, You" on December 11 at 6 PM. This ballad expresses heartfelt emotions about Jay Sera's past love and the memories left behind, featuring a simple yet powerful melody.

The new song "Goodbye, Those Days, You" presents a different vibe from Jay Sera's previous works. The sound reminiscent of 70s rock bands harmonizes with Jay Sera's rough yet delicate vocals, delivering raw emotions and charm. The lyrics are sincere, with lines like "Goodbye, my longing days, now goodbye, I want to hand over that place to the days to come / Goodbye, my precious person, thank you for creating memories that are bittersweet to forget," adding to the song's emotional impact.

Famous artists such as Choi Hoseop, Yoon Yeogyu, and Kwon Inha participated in composing this song. Shim Jaewoong and Park Kangyoung handled the production, while lyricist Ko Byungsik, who has worked on albums and OSTs for various artists including Kim Taewoo of god, Sohyang, Ali, Jo Hangjo, and Yang Ji-eun, contributed the lyrics. Through this collaboration, Jay Sera is showcasing a new charm.

Since debuting in 2010 with her first single "Lonely Night," Jay Sera has continued to receive long-lasting love by releasing numerous hit songs such as "I Came Alone," "You Really Won't Know," "Love Poem Confession Happiness Street," and "Always Love."

Jay Sera's new digital single "Goodbye, Those Days, You" will be released on various online music sites on December 11 at 6 PM. This song will establish itself as an important work showcasing Jay Sera's musical growth and transformation.