Celine Dion
The singer appears in a prerecorded videotaped message that paid tribute to the victims of the Oct. 1, 2017 shooting in Las Vegas. It was filmed at one of her concerts in the city that took place days after the tragedy.
Boyz II Men
The group performed "Motownphilly" and an a capella version of "It's So Hard to Say Goodbye to Yesterday."
Dan Reynolds & Imagine Dragons
"Today, more than ever, I am proud to be from this city. Music shows that there is nothing that should divide us. Tonight, we are one. We are Vegas Strong," the frontman told the crowd.
Imagine Dragons
The band played songs such as "Whatever It Takes" and "Believer" before initiating a moment of silence to honor the victims of the Oct. 1, 2017 Las Vegas shooting. At the end of their set, the crowd stood to sing along with "On Top of the World" and "Radioactive."
Wayne Newton
The veteran Vegas performer introduces a videotaped appearance by Elton John.
Cirque du Soleil
Artists from the Mystère show pose for a photo.
Bryce Harper
The Las Vegas native and Washington Nationals 2015 National League MVP thanked the first responders and the Las Vegas Metropolitan Police Department and hospital staff.