Saturday Night Live kicked off with an appearance by Jason Aldean.
The singer, who was onstage at the Route 91 Harvest musical festival as the Las Vegas shooting began, addressed the tragedy.
"This week, we witnessed one of the worst tragedies in American history," the country artist said. "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, sisters, friends that are all part of our family," he continued. "So, I want to say to them we hurt for you and we hurt with you. You can be sure that we're gonna walk through these tough times together every step of the way because when America is at its best, our bond and our spirit, it's unbreakable."
Aldean then performed I Won't Back Down by Tom Petty who died on Oct. 2.
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Tom Petty through the years
6/16/2006 -- Tom Petty & the Heartbreakers perform on the "What Stage" during Bonnaroo Music and Arts Festival in Manchester, Tenn. on Friday, June 16, 2006. Photo by Mandy Lunn/ The Tennessean (Via MerlinFTP Drop)
SPECIAL FOR USA TODAY--Tom Petty plays to a sold out crowd Sunday, March 7, 1999, at the Fillmore. (AP Photo/San Francisco Examiner, Dan Krauss) ORG XMIT: FXE101
Tom Petty and the Heartbreakers perform at Austin City Limits in 2006.
Petty entertains the crowd during halftime at University of Phoenix Stadium, during Super Bowl XLII in Glendale, on Feb. 3, 2008.
Petty performs during the half time show of Super Bowl XLII at the University of Phoenix Stadium on Sunday, Feb. 3, 2008.
HOLLYWOOD - APRIL 14: Sir Paul McCartney and Olivia Harrison, the widow of George Harrison (C) pose with (from left) Tom Petty, Jeff Lynne, Jim Keltner, Joe Walsh and Dhani Harrison at the ceremony honoring George Harrison of The Beatles with a star on the Hollywood Walk of Fame on April 14, 2009 in Hollywood, California. (Photo by Vince Bucci/Getty Images) ORG XMIT: 85873059 GTY ID: 73059VB010_GEORGE_HARRIS
Petty performs at New Orleans Jazz and Heritage Festival in 2012.
Petty was inducted into the Songwriters Hall Of Fame as part of the 47th Annual Induction and Awards on June 9, 2016.
Hollywood is heartbroken over the loss of Tom Petty.
Petty performs onstage during the 5th Annual Sean Penn & Friends HELP HAITI HOME Gala Benefiting J/P Haitian Relief Organization at Montage Hotel on January 9, 2016 in Beverly Hills, California.
Petty (L) and NARAS President Neil Portnow appear onstage during the MusiCares Person of the Year honoring Tom Petty at the Los Angeles Convention Center on Feb. 10, 2017.
Petty performs onstage during the MusiCares Person of the Year in February.
Tom Petty of Tom Petty and the Heartbreakers seen at KAABOO 2017 at the Del Mar Racetrack and Fairgrounds on Sunday, Sept. 17, 2017.
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