Hwa Sa has revealed her track list for 'O'.

The teaser image features the tracks "Road", "HWASA", title song "NA", "EGO", "OK NEXT", "just want to have some fun", and "O". 'O' is the MAMAMOO member's upcoming 2nd mini album set to release on September 19 KST.

Stay tuned for updates on Hwa Sa's comeback!

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