Adam Levine Gives the Ultimate Review to Young Fan Who Covered 'She Will Be Loved' Before Heart Surgery

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Adam Levine is at a loss for words.

The Maroon 5 frontman took to Twitter on Saturday, gushing over a video that has recently gone viral of a fan singing one of the pop rock band's tunes from a hospital.

WATCH: Adam Levine Releases Hot New Maroon 5 Song Featuring Kendrick Lamar

While in the intensive care unit at Vanderbilt Children's Hospital awaiting surgery, 16-year-old Will Hunt from Chattanooga, Tennessee, covered Maroon 5's 2002 hit, "She Will Be Loved."

In the video, which was uploaded to YouTube and Twitter by Hunt's brother, Mac, the McCallie Prep School sophomore flawlessly belts out the catchy track, accompanied by his father on guitar.

Levine got hold of the video and gave Hunt's sweet rendition of the song a raving review.

"It's hard to express with words what it feels like to know you've helped someone in this way," the 37-year-old singer wrote. "So instead, I'll just share. Nice job kid. :)"

WATCH: Adam Levine and Behati Prinsloo Share First Photo of Their Baby Girl!

Following Levine's sweet tweet, ET caught up with Hunt on Saturday, giving us an update on how the surgery went.

"The surgery went well, but I'm still in pain," he said. "But seeing that video made my whole life! Adam Levine has been my favorite singer ever since I can remember. I sang that same song for my sixth grade talent show."

Hunt also told ET that although he's "never gotten the chance to meet" Levine, he did attend a Maroon 5 concert for Christmas in fourth grade. If he does meet his idol someday, he already knows what he'll tell him!

"I think I would cry first, and then freak out," Hunt gushed. "I would just tell him how much everything about his music has helped me."

Hunt later re-tweeted Levine's message, writing, "I can't breathe, oh my god. Thank you so much, I am your number 1 fan. This is CRAZY."

According to the description on the video, Hunt was recently diagnosed with cardiomyopathy, a disease of the heart muscle, which will require him to undergo two surgeries. He underwent his first surgery on Tuesday, and his next will require a heart transplant.

In addition to touring with Maroon 5, Levine has also been busy with fatherhood, as he and his wife, supermodel Behati Prinsloo, welcomed their first child, daughter Dusty Rose, in September.

During an interview with On Air With Ryan Seacrest earlier this month, Levine revealed his parental "instincts" have already kicked in.

WATCH: Adam Levine Says Parental 'Instincts' Are Kicking in Already: 'It's a Beautiful Experience'

"I've been a parent for three weeks, what do I know?" he joked. "I don't know anything. But it's kind of part of the beauty of it, honestly. There are a lot of instincts, a lot of things that kind of kick in and switch on. It's a beautiful experience."

Hear more in the video below.