The conductor Pierre Boulez has cancelled concerts on Sept. 7 and 9 at the Lucerne Festival in Switzerland as the result of a broken shoulder. A festival spokesman declined to say how the injury occurred, or for how long he will be sidelined.
Pablo Heras-Casado, the music director of the Orchestra of St. Luke's, will step in for Boulez in the two concerts, both with the Lucerne Festival Academy Orchestra.
Boulez, 88, cancelled scheduled appearances in March with the Chicago Symphony Orchestra, due to an undisclosed medical condition. He underwent eye surgery last year.
The summer of 2013 has seen a spate of injuries in the conducting profession. Marin Alsop, the music director of the Baltimore Symphony, sprained her wrist on July 1 when she fell in a hotel bathroom. She has cancelled her summer shows to date, though she is expected to be back on the podium for the last night of the Proms on Sept. 7.
And Andris Nelsons, the Boston Symphony's incoming music director, suffered a severe concussion on the weekend of July 20 when he was hit in the face by a door in Bayreuth, forcing him to drop out of a concert at the Tanglewood festival.
WQXR will be broadcasting several concerts from this year's Lucerne Festival.