Stars pay tribute to Stevie Wonder

Stevie Wonder performs a medley during the taping of Stevie Wonder: Songs In The Key Of Life - An All-Star GRAMMY Salute concert at Nokia theatre in Los Angeles, February 10, 2015. REUTERS/Mario Anzuoni

Tony Bennett, Lady Gaga, Jennifer Hudson, Andrea Bocelli, Ariana Grande, Pharrell Williams and Jamie Foxx sing during the taping. REUTERS/Mario Anzuoni

Pharrell Williams and Ryan Tedder perform Don't You Worry 'Bout A Thing. REUTERS/Mario Anzuoni

Ed Sheeran performs I Was Made To Love Her. REUTERS/Mario Anzuoni

Jill Scott, Janelle Monae and India.Arie perform As. REUTERS/Mario Anzuoni

Tony Bennett performs For Once In My Life. REUTERS/Mario Anzuoni

John Legend performs I Believe (When I Fall in Love It Will Be Forever). REUTERS/Mario Anzuoni

Usher performs If It's Magic with Stevie Wonder. REUTERS/Lucy Nicholson

Stevie Wonder performs a medley. REUTERS/Mario Anzuoni

Ne-Yo and Aisha Morris perform Isn't She Lovely. REUTERS/Mario Anzuoni

Andrea Bocelli, Pharrell Williams and Jamie Foxx sing during the finale. REUTERS/Mario Anzuoni

Host LL Cool J speaks during the taping. REUTERS/Mario Anzuoni

Jennifer Hudson performs All In Love Is Fair. REUTERS/Mario Anzuoni

Kenneth Babyface Edmonds and Ariana Grande perform Signed, Sealed, Delivered I'm Yours. REUTERS/Mario Anzuoni

Andrea Bocelli performs I Just Called To Say I Love You. REUTERS/Mario Anzuoni

Tony Bennett, Jennifer Hudson, Lady Gaga and Ariana Grande talk after the conclusion of the taping. REUTERS/Mario Anzuoni