When Anne Teresa De Keersmaeker worked on Violin Phase in New York in 1980, one piece of music alone besides Steve Reich’s was played in the studio: Bach’s Brandenburg Concertos. Thirty‑five years later, the choreographer continues her work with these pieces. “For me, Bach’s music contains movement and dance like none other and succeeds in associating extreme abstraction with a concrete, physical and even transcendental dimension, perhaps for that very reason.” A regular guest at the Palais Garnier, Anne Teresa De Keersmaeker has been invited back this season with her company, Rosas, to present a codified choreographic language that goes to the very heart of Bach’s music.