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A Stardom Entertainment rep announced the news on the 11th, stating, "Topp Dogg will release a song with a featuring by Cho PD on the 16th at noon KST."

From what's been said so far, the collaborative digital single includes participation from Topp Dogg's vocal line Seogoong, Sangdo, and P-Goon and rappers Yano and Cho PD. However, there will be more details coming on the 14th, so hopefully we'll get a better idea of whether it'll be just certain members participating or all of them. 

The group have been showcasing their talent through their latest release 'Amadeus' and various covers, so their next song should be worth the wait, especially as it will be a collaborative effort with Cho PD!