Billlie 開始逐步公開她們即將發行的專輯《the collective soul and unconscious: chapter two》的更多資訊。
韓國時間4月17日凌晨，這支人氣女團發布了曲目列表預告，揭曉了所有即將發行的新歌名稱。根據列表，這張專輯包含12首新曲："Secret No More"、"ZAP"、"WORK"、"TBD"、"Beyond Me"、"Soupasta"、"Off-Air"、"ZAP (ultraviolet remix)"、"WORK (anonymous remix)"、"Soupasta (unconscious remix)"、"Domino Butterfly Effect (Korean ver.)"以及 "Cloud Palace (collective soul remix)"。
與此同時，Billlie將於5月6日發行她們的首張正規專輯《the collective soul and unconscious: chapter two》。
常見問題：
問：1. Q: What is Secret? 答： A: Secret is a South Korean girl group formed by TS Entertainment in 2009.
問：2. Q: How many members are there in Secret? 答： A: Secret originally had five members, but now consists of only four members after Song Ji-eun's departure.
問：10. Q: Are Secret still active as a group? 答： A: Yes, Secret is still active as a group, with the remaining members continuing to release music and participate in various activities.