VIDEO: Chris Martin of Coldplay performs at Beau Biden's funeral

Chris Martin of Coldplay performed Saturday at the funeral for Beau Biden.

Also during the service, President Barack Obama remembered Beau Biden, the vice president's son, as a public servant who learned through early tragedy what mattered most and resolved to "live a life of meaning" that would lift up those around him.

"He was a scion of an incredible family who brushed away the possibility of privilege for the harder, better reward of earning his own way," Obama said. He described Beau Biden as a son, a father, a soldier and a politician who didn't cut corners in his efforts to serve his country and others.

The former Delaware attorney general died a week ago of brain cancer at age 46.