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On October 28, a showcase will take place for the upcoming program 'Mix Nine' in which all the contestants will be revealed. During this day, there will be several performances by the contestants/trainees. Additionally, the main song that will be representing the whole program will also be unveiled for the first time on this particular day. 

It's been reported that the song has been created by the very famous producer Teddy - this is the first time in which he has produced/wrote a song for non-YG Entertainment idols. Teddy is one of most well-known and established producers in the Korean music market and has helped groups like Big Bang, Black Pink, and 2NE1 excel in the K-pop world. Stay tuned for more information.

'Mix Nine' will be airing its first episode on October 29 at 4:50 p.m. KST.