For more than 50 years, the Argentinian artist Julio Le Parc has been exploring spectatorship, movement and participation. Following a major survey show at the Palais de Tokyo, Robert Barry considers the artist’s life and work

Musée d'Art Moderne de la Ville de Paris, France

At the age of four, Anri Sala was taken to the Palace of Pioneers in Tirana, then capital of the People's Socialist Republic of Albania, in order to begin the violin lessons he had asked his parents for. ‘So there was this man sitting in front of a piano,’ the artist recalls, ‘and he needed to check if I had an ear.’ In a small, darkened room, the instructor clapped out a series of rhythms for the boy to repeat, each one longer and more complex than the last, ‘and I got so worried that I would miss the next one,’ Sala says. But he didn't falter. ‘Good,’ said the violin teacher finally, satisfied with the boy's ability to recognize and repeat a rhythm. ‘You're done.’

Richard Meyer’s new publication: What Was Contemporary Art?

The sculpture, on view at Palais de Tokyo, uses materials discarded at the end of the previous exhibition

For this exhibition of the architect's work at the Ludwig Museum, Budapest, a bewildering array of materials and structures

Centre d’Art Contemporain, Geneva, Switzerland

Heart Museum, Herning, Denmark

French philosopher Jean-Luc Nancy talks about subjects ranging from everyday life to film, the body and the soul