A classical concert at the Queen Elizabeth Hall, London, was disrupted Friday by anti-Israel activists. 

Shouting erupted during the Jerusalem Quartet’s first item on the programme, Mozart’s String Quartet No.14 in G major, according to a classical music website.

The disrupters were silenced and the concert continued. The Jerusalem Quartet, which plays at major venues across the world, continues its European tour in Genoa tonight.

To counteract the unpleasant reception they received in London and in support of the Quartet, here is a short excerpt of them playing: