Choo Young Woo gifted fans with a sweet song as a thank you after 'The Trauma Code: Heroes on Call' reached number 1 on Netflix globally.

To celebrate, Netflix Korea uploaded a short video where Choo Young Woo sings his rendition of Roy Kim's "When Spring Comes." In the short clip, Choo Young Woo explained, "Hi this is Choo Young Woo, who played Yang Jae Won in 'The Trauma Code: Heroes on Call.' I said if 'The Trauma Code' reached number 1 globally, I would sing a song. I am so thankful we received so much love and I got to keep that promise."

Choo Young Woo sang the song accompanied by an acoustic guitar, surprising fans with his melodious voice. Korean netizens who were impressed with the actor's singing skills commented:

"Wow, he's so good at singing. I was expecting him to sing well since he had such a nice voice but this is really surprising."

"He sings so well."

"His voice is so nice."

"He sings in a way it's comfortable to listen to."

"What is he not good at? It's not fair he has everything."

"His voice is so nice, he's so good at singing. He should release an album."

"He's good at acting and he's good at singing."

"His voice is perfect."

"Oh wow."

"Why is his voice so soothing?"

"He's a singer."

"What? Why is he so good at singing?"

"This is a lie. He can't be this good at singing."

"He sounds like Roy Kim. lol."

"So soothing."

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