With huge, city-wide casts from an array of communities, theater director Lear deBessonet’s productions illuminate the unique power of the arts to transform our lives through collective expression. She explores the power of spectacle to inspire awe, connect individuals and heal loneliness with tangible, life-changing results. In a dramatic moment, deBessonet’s message comes to life when Broadway star Brian Stokes Mitchell takes the stage for a dazzling performance of “The Impossible Dream (The Quest),” accompanied by pianist Todd Almond, the MEI Screaming Eagles Marching Band and some surprise vocalists.