Opening Night Of Duck Commander The Musical - Las VegasLast night, the deadliest mass shooting in U.S. history left at least 58 people dead and more than 500 injured at the Route 91 Harvest Festival in Las Vegas. A lone gunman opened fire at the festival, where 22,000 people where enjoying country music acts.

This disturbing video shows Jason Aldean performing while shots can be heard in the background:

Jason Aldean, his wife Brittany Kerr Aldean -- formerly of "American Idol" -- and their fellow music stars reached out with shock, condolences, heartbreak, and prayers after the shooting.

Jake Owen, like the Aldeans, was there when it happened, and asked for prayers for the less fortunate concert-goers:

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More music stars reached out from around the world, including Ariana Grande, whose Manchester, U.K., concert was the site of a suicide bomb attack earlier this year:

A post shared by Adam Levine (@adamlevine) on

The gunman was later identified:

Networks are adjusting their TV schedules to add coverage of the shooting, so check your local listings.

[via: Reuters, ET]

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