Xdinary Heroes continue to prepare for their comeback with their 4th digital single 'Open ♭eta: V6.4.'

On September 6 at midnight KST, the JYP Entertainment band released a quirky music video teaser where the members rock out to a snippet of their new track "iNSTEAD (feat. Yoon Do Hyun)."

Meanwhile, 'Open ♭eta V6.4' features the title track "iNSTEAD!" feat. Yoon Do Hyun of YB and the b-side track "XH_Stone_75". 'Open ♭eta: V6.4' will be released on September 9 at 6 PM KST.

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