Pina Bausch revolutionized dance. The German artist is the subject of several films including one by Wim Wenders. Dancing Pina by Florian Heinzen-Ziob, in theaters this Wednesday, takes us step by step, gesture by gesture, the transmission of two choreographies by Pina by historical dancers from his company. Iphigenia in Tauride of Gluck at the ballet of the Dresden Opera and the Rite of Spring from Stravinsky to a group of dancers from several African countries at the Ecole des Sables in Dakar.