It seems like G.Soul is another artist who was criticized by J.Y. Park for not using the infamous 'half air' technique.

On the August 16th airing of 'Cultwo Show', G.Soul said, "I was honorably able to sing a duet with J.Y. Park at the 'JYP Nation' concert. It was even better because I got to sing 'I Have A Girl', which is one of my favorite." 

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G.Soul then jokingly added, "But J.Y. Park sajangnim told me that I lack air when I sing. I think I'll need to sing with an air tank on me from now." 

He should share with all the JYP Entertainment artists!