Pro-Palestinian protesters interrupted the BBC Proms in the Royal Albert Hall.
Jewish Artists for Palestine halted the Melbourne Symphony Orchestra (MSO) for more than 10 minutes due to the protest.
Protesters waved black handwritten signs reading "complicit in genocide" and "Jewish Artists for Palestine" from the upper tiers of the venue.
The BBC was forced to apologise for their actions.
One woman shouted: "The MSO has blood on its hands."
In a statement from Jewish Artists for Palestine, protesters voiced opposition to "Zionist funding, censorship and complicity in our cultural institutions" over the Gaza war.
They targeted the MSO after they cancelled a performance by pianist Jayson Gillham last year, after he spoke in support of Gazans.
Protesters shouted yesterday evening: "You silenced Jayson Gillham", and the "MSO is complicit in genocide".
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Pro-Palestine protesters outside the Royal Albert Hall
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The group raises concerns over the funding of the MSO, as well as artist Khatia Buniatishvili, performing alongside the Israel Philharmonic Orchestra.
Boos emerged from the audience during the protest.
The MSO has previously said the decision to cancel the concert was a mistake.
On Friday, the orchestra then went on to restart their performance, and security removed the protesters.
Protesters held up signs saying 'complicit in genocide'
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Angela Tanner, who was in the stalls, told the BBC: "The whole programme had to start again and was put into a different order after the piano was put onto the stage and taken off again.
"There was lots of booing from the audience, then eventually they [the organisers] announced, thanks for your patience."
Another member stated: "Overall, the atmosphere seemed to be strongly against the protest, with many members of the audience annoyed and shouting obscenities with anger at the protesters."
The BBC said in a statement: "We are sorry about the disruption to our coverage of the BBC Proms on Radio 3 tonight.
A letter written by the protesters
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"There was a disturbance at tonight's Prom, which meant the concert was paused for a few minutes and the live broadcast on BBC Radio 3 diverted to pre-recorded music.
"The incident was dealt with swiftly by the Royal Albert Hall.
"Our priority is always the safety and wellbeing of everyone who attends the BBC Proms, and we would like to thank our staff and the performers whose response helped keep disruption to a minimum."