MAMAMOO's Moon Byul and Mirani go old school in MV for 'newtro' love song 'G999'

MAMAMOO's Moon Byul drops retro live MV teaser for 'G999' feat Mirani

Moon Byul and Mirani are in a colorful setting in 'G999' teaser photos

Moon Byul unveils a fun teaser image of herself and Mirani for upcoming pre-release single 'G999'