Ton Koopman, a leading authority on Baroque music, gathered his favourite orchestra and eminent Baroque singers for a concert focusing on the Magnificat, the traditional prayer said by the Virgin Mary after hearing that she would bear God’s son. Bach…

She is a piano legend, he has collaborated as a soloist with all leading conductors and orchestras around the world. Now Martha Argerich and Guy Braunstein come to the Pierre Boulez Saal with their first-ever duo program—an artistic encounter that…