TWICE TV5
TWICE in SWITZERLAND
KNOCK KNOCK SPECIAL M/V
http://www.vlive.tv/video/30627
http://tv.naver.com/v/1689562
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看完 Special MV 来听听 Signal 喔喔喔!!
https://youtu.be/VQtonf1fv_s Signal
https://goo.gl/2FGgW8 音源
https://youtu.be/TRijPlol9D8 MCD