Aldean was performing at the Route 91 Harvest festival on the Las Vegas strip when gunman Stephen Paddock opened fire on the crowd of 22,000 attendees.
The “Don’t you wanna stay” singer visited patients and families at the University Medical Center.
The hospital thanked the singer in a Facebook post, writing that it “helped heal hearts and cheer those who were wounded in this tragedy."
His wife Brittany Aldean took to Instagram, posting a chilling picture of the couple holding each other while looking towards the Mandalay Bay Hotel and Casino.
She said in the caption that it was “surreal” to be back in Las Vegas and that the couple had visited “some of the strongest people we have ever met... fighting the toughest battle of them all... for their lives. You have helped us try to begin the healing process by seeing the strength each one of you have.”
Mr Paddock was shooting from his 32nd floor hotel room, where police believe he shot himself just before their arrival.
He had used a hammer to smash the windows open and fired into the crowd indiscriminately.
A total of 47 guns and nearly 1,600 bullets were found in his possession between his car, hotel room, and Mesquite and Reno, Nevada residences.
Aldean later performed on Saturday Night Live, singing the late Tom Petty’s “I Won’t Back Down”.
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