STAGE TUBE: Jonathan Groff Duets with Mary-Mitchell Campbell for International Day of Happiness!

In celebration of the third annual International Day of Happiness at the United Nations Headquarters in New York, the NGO Relations and Advocacy Section of DPI held an expert global panel yesterday, exploring scientifically proven data that demonstrates the inverse relationship that wealth (both national and personal) can have on happiness. Broadway Conductor and Composer Mary-Mitchell Campbell, currently serving as musical director of Finding Neverland, and Founder of Artists Striving to End Poverty (ASTEP) served as the event's Moderator. Campbell called upon her friend Jonathan Groff, who is currently appearing onstage in Hamilton, to celebrate the special occasion on Good Day New York. Below, watch as they perform "Happy Days are Here Again" and "Get Happy."

Campbell's other theater credits include Company (Drama Desk Award, Orchestrations), Big Fish, The Addams Family, Sweeney Todd, Road Show, Next to Normal, Hello Again, Allegro.

In addition to starring in the second season of the hit HBO television series, "Looking", Groff will also star in the Encores! Off-Center production of William Finn's A New Brain at New York City Center this coming June. He is currently starring in Lin Manuel Miranda's new musical HAMILTON which heads to Broadway in July. His Broadway credits include Spring Awakening (Theatre World Award, Tony, Drama Desk, and Drama League Award nominations). His Off-Broadway credits include The Submission (MCC Theater), The Bacchae (The Public Theater),Craig Lucas' The Singing Forest and Prayer for My Enemy (Obie Award) and The Public Theater's revival of Hair. On the West End he has been seen in Deathtrap (Noel Coward Theatre). Regionally his credits include Red (Mark Taper Forum). His additional film and television credits include "Boss," "Glee," "The Good Wife," "One Life to Live," American Sniper,HBO's The Normal Heart, Frozen, C.O.G., The Conspirator, Twelve-Thirty and Taking Woodstock.