Coldplay and REM's Peter Buck Honor Tom Petty

Coldplay was joined by R.E.M. guitarist Peter Buck onstage in Portland,  Oregon, on Monday to remember Tom Petty with a touching cover of his hit  single "Free Fallin'" off his 1989 album Full Moon Fever. The  performance at The Moda Center was preceded by a moment of silence for  the victims of Sunday night's mass shooting at a country music festival  in Las Vegas. 

Coldplay has become known for commemorating tragic events  during their current tour. In August, they honored Linkin Park frontman  Chester Bennington with a cover of "Crawling" and paid tribute to the victims of Houston's Hurricane Harvey by performing a brand-new song called "Houston."