WATCH: Miley Cyrus changes set on Jimmy Fallon to sing moving rendition of 'The Climb' for Las Vegas
Miley Cyrus (Photo: Screen capture)

Late-night host Jimmy Fallon is celebrating "Miley Week" with singer, songwriter and actress Miley Cyrus. But after the massacre in Las Vegas left 59 people dead, touting her latest album was the last thing on her mind.

Fallon began Monday's show with a short message reminding Americans that in the face of tragedy and acts of terror "good still exists in this world."

"We're here to entertain you tonight, that's what we do," Fallon said. He then announced Miley Cyrus, "with a little help from Adam Sandler." The two began the show singing Dido's "No Freedom," as a dedication to the lives lost and the hundreds injured in Las Vegas.

As the show ended, instead of performing songs from her new album "Younger Now," Cyrus sang a moving and passionate rendition of her song "The Climb."

Watch both performances below.

No Freedom:

The Climb:

Cyrus explains why she chose "No Freedom":