On the April 19th airing of MBC's 'Mask King,' singer G.NA guested on the show where she competed under the alias and mask name, Fox in Wonderland. 

During the first round, G.NA flawlessly sang the hit song "Like Yesterday" by J. However, veteran singer Baek Ji Young recognized G.NA's voice and commented, "This is G.NA's voice. When she sings high notes, G.NA has this light vibration she lets out. This is exactly that." 

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Despite being found out, G.NA revealed that she was actually glad that Baek Ji Young had recognized her voice and said, "The thing that really made me feel happy was when Baek Ji Young unnie recognized my voice. It felt like I had won. It's honestly not about winning or losing, but I was happy that she recognized my voice." 

Check out her performance as Fox in Wonderland below!