Now that member Sungtae is back from the army, the duo group Postmen�are finally making their official comeback!

Postmen have released their new song "I'm OK" on July 14, and surprisingly enough, the song is a high tempo dance track! This is the duo's first dance title track, but still include their amazing vocals.

Not only that, but the song also includes a rap featuring by none other than BTOB's Minhyuk! It's hard to believe, but this will be his first rap featuring for another artist since his debut! He'll be going by his underground rapper name Heota.

The track is also produced, composed and written by member Shin Ji Hoo, who also worked on the melody and rap making!

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Check it out above!