From my conclusion...
"But Elements of Oz is fundamentally about process rather than artistic product: the making of the original film, its percolation throughout popular culture, and The Builders Association’s own process of live reenactment and reconceptualization. These three strands come together in Elements of Oz’s most transformative moment: rather than risking copyright infringement by playing “Somewhere Over the Rainbow” in the theatre, the production uses the app to stream many covers and versions of the song from YouTube onto individual phones. The result is a sweet, cacophonous chorus of professional singers in auditoriums and teenagers in their bedrooms from around the globe, offering their own versions of the classic song and practicing the same process of reinvention that guides Elements of Oz."