ART21 is an award-winning series of 24 programmes in which 100 contemporary artists talk about their creations, the way they work and their individual view of art. Spontaneous and joyful, subversive or amusing, play can take many forms in daily life as well as in contemporary art. The documentary “Play” explores the work of the German conceptual artist Oliver Herring, Venezuelan-born painter Arturo Herrera, American artists Jessica Stockholder and Ellen Gallagher, and concludes with an original video artwork by Teresa Hubbard and Alexander Birchler.