April want to apologize for being gorgeous in their upcoming comeback title track, "Oh! My Mistake"!

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The title song from April's 6th mini album 'The Ruby' is a vibrant, synth pop genre. With "Oh! My Mistake", April deliver a message of a confident woman who isn't afraid to dive into romance. 

Don't you admit, the April girls look prettier than ever in their 2nd MV teaser? The girls' full comeback is set for October 16 at 6 PM KST!