Girl's Day will be treating fans to their voices again with a collab project single with hair care brand 'mise en scene'!

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The ladies are currently the endorsement models for the hair brand, and they've decided to take their ties a notch further, joining hands for a project single titled "Hello Bubble"! And of course the brains behind this song is none other than Duble Sidekick, who have produced Girl's Day's past hits.

The song and music video will drop on May 12, so mark that date down on your calendar!