'Force Awakens' Cast, Roots Sing 'Star Wars' Medley A Cappella

Daisy Ridley, Oscar Isaac, Adam Driver,Carrie Fisher, Harrison Ford and more revisit John Williams' score on 'Tonight Show'

'The Tonight Show' rounded up the cast of 'The Force Awakens' to join Jimmy Fallon and the Roots in an a cappella medley of 'Star Wars' themes

The Tonight Show rounded up nearly the entire cast of Star Wars: The Force Awakens to join Jimmy Fallon and the Roots in an a cappella medley that revisited the unforgettable themes and leitmotifs from John Williams' original trilogy score.

Daisy Ridley, John Boyega, Oscar Isaac, Adam Driver, Gwendoline Christie, Lupita Nyong'o, Carrie Fisher and, briefly, Harrison Ford were assisted by a gaggle of Stormtroopers (played by the Roots), androids and Chewbacca for the performance. The medley jumps from its iconic "Overture" to "The Imperial March" to the "Cantina Song" to a rousing finale.

The medley comes as the veil of secrecy that shrouded the much-anticipated film and its plot for the past year finally came down when the embargo on The Force Awakens reviews ended at midnight Wednesday Los Angeles time. So far, the buzz for J.J. Abrams' entrant into the Star Wars universe is encouraging: The Force Awakens is running at 97 percent on Rotten Tomatoes, a vast improvement over the maligned prequels. The film opens Friday to likely box office record-shattering numbers.