UNICEF - Imagine

Aaaand here is the full list of names who sung in  the video:

Regina Wilson – NY Firefighter

Angelique Kidjo - Singer

Nicole Scherzinger - Singer

Cody Simpson - Singer

Sigrid Agren - Model

Danny O’Donoghue - Singer

Roarke - Singer

Idris Elba - Actor

Kate Naut, Jenny Bapst, Francois Alexander, Samantha Rex - Singers

Lance Bass - Singer

Dash Mihok - Film/TV actor

Priyanka Chopra - Actress/Singer

Suki Waterhouse - Model

Craig David - Singer

Zelda Williams - Actress

Joan Sebastian - Singer/Songwriter

Adam Lambert - Singer

Nasri - Singer

Maria Gabriela de Faria - Actress/Singer

Ban Ki-Moon - UN Secretary General

Professional Performing Arts School Choir Members - School Choir

Family School Students - International Students

David Guetta - Music Producer/DJ

Courteney Cox & Coco Arquette - Actress & daughter

Doni & Akai Floyd - Mother & Daughter  

 Mari Malek - DJ Stiletto/Model/Activist

David Arquette - Actor

Isaiah Mustafa - Actor

Scott Foley - Actor

Sam Martin - Singer

Bianca Yuzon - Singer

Justin Bartha and baby Asa - Film/TV actor & daughter

Eric Christian Olsen - Actor

Antonella Barba - Singer

Rumer Willis - Actress

Katy Perry - Singer

Seth Green - Actor

Rebecca Da Costa - Actress/Model

Butch Vig - Music Producer

Antonique Smith - Actress

will.i.am - Musician/Entrepreneur

Taye Diggs - Broadway/TV/Film actor

Patricia Arquette & Harlow Jane - Actress & daughter

Ben Barnes - Actor

Rob Kazinsky - Actor

Tokio Hotel’s Bill Kaulitz - Singer

Dianna Agron - Actress/Singer

Tony Lake - Executive Director of UNICEF

Ore & Neave Segal - Sons of Edo & Ayelet Segal

Yuna Kim - Figure Skater

Eden Espinosa - Broadway Actress/Singer

Sunidhi Chauhan – Singer

Nina Dobrev - Actress

Julian Morris - Actor

Poe - Singer (US)

Sanaa Lathan - Actress

Amy Brenneman - Actress

Trevor Jackson - Singer & Actor