source:https://www.soompi.com/2017/06/25/idol-rapper-songwriter-stuns-everyone-vocal-talent-king-masked-singer/
The episode of MBC’s “King of Masked Singer” featured the reveal of “Baby Octopus Prince” to be a member of an idol group who is known for his talents as a rapper and songwriter.
The second battle of the first round was between “Oh Yeah Stingray” and “Baby Octopus Prince,” who sang Yoon Do Hyun’s “I Must Have Loved You” together.
