Watch the Doobie Brothers Reunite With Michael McDonald on ‘The Tonight Show’ Read More: Watch the Doobie Brothers Reunite With Michael McDonald on 'The Tonight Show' (UCR)

The Doobie Brothers brought a piece of their past with them when they visited The Tonight Show Starring Jimmy Fallon on Thursday night.

Read More of Jeff Giles' article @ Ultimate Classic Rock: Watch the Doobie Brothers Reunite With Michael McDonald on 'The Tonight Show'