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"Don't Be Happy" (행복하지마) is the first digital single by MAMAMOO. It was released on January 9, 2014 and is a collaboration with Bumkey. It is the first pre-release single before their official debut with the mini-album Hello in June 2014.

Track list

  1. "Don't Be Happy (행복하지마)"
  2. "Don't Be Happy (Inst.)"

Video links

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