Bethany Joy Lenz

Actress, Singer-Songwriter & Filmmaker; Known For "One Tree Hill"

Adam Ockelford

Professor of Music at Roehampton University; Author of "In the Key of Genius" & Secretary of the Society for Education, Music and Psychology Research

Ryan Murphy

Writer, Producer

Jeffree Star

Makeup Artist, Entrepreneur & Musician

Shawn Mendes

Award-Winning Pop Singer-Songwriter

Pamela Meyer

Founder & CEO of Calibrate; Author of "Liespotting;" TED Speaker

Meek Mill

Hip-Hop Recording Artist & Criminal Reform Activist

Jada Pinkett Smith

Actress, Host of "Red Table Talk" & Founder of 100% WOMON

Robert Downey Jr.

Academy Award-Winning Actor & Producer

Robert Downey Jr. Wins Male Supporting Actor In A Motion Picture

Oscar Isaac

Actor Known for "Inside Llewyn Davis," "Star Wars: Episode VII - The Force Awakens" & "X-Men: Apocalypse"

Kendrick Lamar

Grammy & Pulitzer Award-Winning Hip-Hop Recording Artist & Rapper

Randy Jackson

Music Producer, Former "American Idol" Judge, Author & Health Advocate

Adam Ostrow

Chief Digital Officer, TEGNA

Gabes Torres

Artist, Theologian, Psychotherapist & Human Rights Activist

Scarlett Johansson

Award-Winning Actress & Singer Known for Portraying the Black Widow in the Marvel Cinematic Universe

Henry Rollins (Spoken Word)

Artist

Queen Latifah

Singer-Songwriter, Rapper, Actress, Television & Record Producer, Talk Show Host

Normani Kordei

Singer, Songwriter & Dancer; Member of Fifth Harmony and "Dancing With the Stars" Champion

Jennifer Holliday

Singer and Tony Award-Winning Actress

Jay-Z

Renowned Rapper and Entrepreneur

Adrienne Bailon Houghton

Daytime Emmy Award-Winning Television Host; Acclaimed Pop-Vocalist; Producer & Founder of the Faith-Based Jewelry Brand "XIXI"

Bruno Mars

Grammy Award-Winning Singer-Songwriter & Record Producer

Dave

Rapper, Singer-Songwriter, Producer & Actor

Esera Tuaolo

NFL Veteran & LGBT Role Model

Jimmy Wayne

Country Music Artist, NY Times Best Selling Author & Founder of Meet Me Halfway Campaign

Brittany Snow

Actress, Producer, Director, Singer & Co-Founder of Love Is Louder

Cynthia Kenyon

Molecular Biologist & Biogerontologist; Vice President of Aging Research at Calico

Julianne Hough

Emmy Award Winner for Outstanding Choreography, Country Music Singer, Actress & Professional Dancer

Nick Cannon

TV Personality, Former Host of "Wild N Out" & "America's Got Talent"

9th Wonder

Grammy Award-Winning Producer, Record Executive, DJ & Rapper

9th Wonder On Sampling For Kendrick Lamar | The Formula, S1E2