Toni took the stage Friday alongside OneRepublic for Good Morning America's Summer Concert series. OneRepublic was filling in for Linkin Park who was originally scheduled to perform.
"Chester sang this at Chris' funeral and this is arguably one of the greatest songs written in the last 50 years, I think by most people's accords. It's a very special song to us and I think to most people and especially to Toni, as well," said OneRepublic frontman Ryan Tedder.
"It's an honor to perform this for my dad and Chester and to sing for them," Toni added.
During the performance, members of the audience could be seen wiping away tears.
Chris died on May 18 at the age of 52 after committing suicide by hanging himself inside a hotel room in Detroit. On July 20, Bennington died at the age of 41 after committing suicide by hanging himself inside his home home in California.