"Knock" is the debut single album by KNK. It was released on March 3, 2016 with the title track used to promote the single.

Track list

  1. "Knock" - 3:42
  2. "Angel Heart (마음씨)" - 3:37
  3. "Knock" (Inst.) - 3:42
  4. "Angel Heart (마음씨)" (Inst.) - 3:37


Video links

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