Making an unannounced appearance after a massacre occurred during his performance at the Route 91 Harvest festival in Las Vegas, Jason Aldean performed during Saturday Night Live's cold open this week. The country singer addressed victims of the deadliest mass shooting in recent U.S. history before performing the late Tom Petty's "I Won't Back Down."

A somber Aldean told the audience:

This week, we witnessed one of the worst tragedies in America's history. Like everyone, I'm struggling to understand what happened that night and how to pick up the pieces and start to heal. So many people are hurting, there are children, parents, brothers, sister, friends, they're all part of our family

So I want to say to them, we hurt for you and we hurt with you. You can be sure we are going to walk through these tough times together every step of the best. When America is at its best, our bond and our spirit, it's unbreakable.

Aldean had been headlining the Route 91 Harvest country music festival on October 1 when Stephen Paddock started to fire onto the crowd from his 32nd floor room at the Mandalay Bay hotel. Fifty-eight people were killed and over 500 were injured in the worst mass shooting modern American history. Paddock, 64, killed himself by the time a SWAT team entered the room; investigators are still looking for a motive.

Video showed Aldean on stage singing until he realized the pop-pop-pop sounds were gunfire, prompting him to flee. He later said, "Something has changed in this country and in this world lately that is scary to see. This world is becoming the kind of place I am afraid to raise my children in."

Over the last 24 hrs I have gone through lots of emotions. Fear, Anger, Heartache, Compassion and many others. I truely dont understand why a person would want to take the life of another. Something has changed in this country and in this world lately that is scary to see. This world is becoming the kind of place i am afraid to raise my children in. At the end of the day we arent Democrats or Republicans, Whites or Blacks, Men or Women. We are all humans and we are all Americans and its time to start acting like it and stand together as ONE! That is the only way we will ever get this Country to be better than it has ever been, but we have a long way to go and we have to start now. My heart aches for the Victims and their families of this Senseless act. I am so sorry for the hurt and pain everyone is feeling right now and there are no words i can say to to take that pain away. Just know u all are in my heart and my prayers as we all go through this together. Time to come together and stop the hate! #stopthehate #prayforlasvegas

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