The songstress first joined Jennifer Nettles on stage to perform the song "She Used to Be Mine" from the musical, Waitress, for which Bareilles wrote the music.

Nettles and tourmates Brandy Clark, Lindsay Ell and Tara Thompson welcomed the pop singer again for the night's finale, a cover of the Beatles' "With a Little Help from My Friends." Watch it - here.

Sara Bareilles Music, DVDs, Books and more Sara Bareilles T-shirts and Posters More Sara Bareilles News Share this article Related Stories • Sara Bareilles To Join Jason Mraz On Broadway For 'Waitress' • Sara Bareilles Talks Going Broadway With 'Waitress' Role • Sara Bareilles Going Broadway With Lead 'Waitress' Role • Sara Bareilles To Play Ariel In 'The Little Mermaid' Stage Performance • Sara Bareilles Duets With Jennifer Nettles In NYC • Sara Bareilles Covers Chris Stapleton's 'Tennessee Whiskey' • Sara Bareilles Reveals New Song 'She Used to Be Mine' • Sara Bareilles Announces New Album 'What's Inside: Songs From Waitress' • Sara Bareilles Reveals Details For New Book 'Sounds Like Me' More Stories for Sara Bareilles Sara Bareilles Music