“Pro-Palestinian protesters interrupted the Philadelphia Orchestra’s Thursday night performance in Brussels, urging the orchestra to cancel the upcoming Israel leg of its tour. The protesters broke into a performance of the Brahms Piano Concerto No. 1 in D Minor with chants of ‘free, free, Palestine,’ and after about 30 seconds, music director Yannick Nézet-Séguin stopped conducting and the music came to a halt … Security removed the protesters, and the concert resumed about 25 minutes later.”