It's unclear if this is a song from Zico's mixtape as Block B members have often put out mix tapes, or if this will be a song he will be promoting as a solo act. He first hinted he was up to something when he tweeted, "I'm going to upload a photo in 30 minutes."

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The photo he uploaded was the picture above, and he didn't quite give any other hints, not even when the song was being released. It seems to have a featured artist that he's keeping secret for now.

Stay tuned for updates!