The Castello di Rivoli in Turin is teaching music students how to perform a piece by the artists Jennifer Allora and Guillermo Calzadilla. The pair’s Stop, Repair, Prepare: Variations on Ode to Joy for a Prepared Piano (2008) requires the performer to stand in a hole carved in a grand piano on wheels, lean forward, reach the backwards keyboard from above and play Beethoven’s Ode to Joy while walking around the room. Carolyn Christov-Bakargiev, the new director in charge of both the Castello di Rivoli and the Galleria Civica d’Arte Moderna e Contemporanea in Turin, says she is organising a workshop to “expand the number of people who can play the piece, because you never know where Allora & Calzadilla will end up in ten or 20 years’ time.” At the end of the workshops, Allora & Calzadilla’s work will be presented in a series of hourly performances.