2AM - Should've Known Teaser
https://youtu.be/NC7xGJuYui0
cr. Stone Music Entertainment
2AM 迷你4輯 "Ballad 21 F/W"
Tracklist
https://pbs.twimg.com/media/FCOzMm3VQAUG3sK.jpg
Concept Photo
https://pbs.twimg.com/media/FBqxDM1VcAc8t7C.jpg
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https://pbs.twimg.com/media/FB6N071VQAAwyu6.jpg
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https://pbs.twimg.com/media/FCEePvkX0As5tXQ.jpg
https://pbs.twimg.com/media/FCEeShTWYAYxn1B.jpg
cr. voice_2am @ 推特