Miley kicked off 'Miley Week' a performance of her song 'The Climb' from The Hannah Montana movie back in 2009. She's spending the week at the Jimmy Kimmel show
Though the song came from a very different time of her life, she wanted to sing the touching song in honor of the victims from the Las Vegas shooting at Route 91 Harvest Festival - a country festival that is near to Miley's heart as someone who grew up in Nashville.
See the amazing performance here: