Lindsey Buckingham and Christine McVie turned their one night on The Tonight Show Starring Jimmy Fallon last week into two.
After performing "In My World" off their self-titled debut album on Thursday, they took part in one of Fallon's ongoing bits -- playing a classic song on classroom instruments -- and that aired last night (Monday).
Joined by The Roots -- the Tonight Show house band -- and kids from Paul Newman's Serious Fun Children's Network camp for children with serious illnesses, they turned in a version of Fleetwood Mac's "Don't Stop."
Other artists who've taken part in the skit include Sia, Adele, Ed Sheeran and Metallica. Here's video...