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After actress Moon Hee Kyung left the Swish team to join the Highlight team, Changjo was left with the burden of having to perform two stages during the semi-finals, while the rest of the competitors would be handling one each. Changjo and the Swish team, consisting of rappers Basick, Microdot, and Joosuc, decided to touch on the topic of corrupt politics in their first semi-final song. 

The track is titled "Bat", and in traditional Korean fables, a bat is known to describe a person who moves from place to place depending on what goods or riches he/she can get off from the current party. The hook of the song, which goes "they come and go and come and go," compares the way bats fly around from place to place to conspiring people, whether it be in politics, in the workplace, in society, etc, who jump on "lines" of successful parties only to dump them for another later on.

Check out Changjo and the Swish team's performance of "Bat" above, especially if you've yet to see Changjo bringing out his hidden rap skills! On next week's 'Hip Hop Nation 2', Changjo will be putting on his 2nd semi-final performance, for which he enlisted the help of A Pink's Namjoo!