Artist and musician Brian Eno — who also composed the iconic Windows 95 operating system startup chime — called on Microsoft today to “suspend all services that support any operations that contribute to violations of international law,” saying the company plays a role in “surveillance, violence, and destruction in Palestine.” It’s the latest high-profile instance of the tech giant being pressed on its contracts with the Israeli government.

“I gladly took on the [Windows 95] project as a creative challenge and enjoyed the interaction with my contacts at the company,” Eno wrote on Instagram. “I never would have believed that the same company could one day be implicated in the machinery of oppression and war.”

The musician — who was a member of the influential rock band Roxy Music and has also had a long, storied solo career — specifically called out Microsoft’s contracts with Israel’s Ministry of Defense. Microsoft acknowledged last week that it has contracts with the Israeli government for cloud and AI services, but claimed that an internal review conducted found “no evidence” that its tools were used to “target or harm people” in Gaza.

Microsoft has been taken to task in recent weeks over its business dealings with the Israeli government specifically. The outcry over Microsoft’s contracts with Israel relates to the ongoing bombardment of Gaza following Hamas attacks on Israel on October 7th, 2023. Human rights groups, including commissions at the United Nations, have accused Israel of war crimes and genocidal acts in its military operation that has killed thousands; as of this month, the Gaza Health Ministry reported more than 52,000 deaths, though some researchers say that number could be as high as 109,000 people.

Some of Microsoft’s fiercest critics are its own employees opposed to the company’s ties to Israel.

Earlier this week during Microsoft’s developer conference, multiple onstage events were disrupted, including CEO Satya Nadella’s keynote speech on Monday. During the event, Microsoft employee Joe Lopez interrupted Nadella, yelling, “How about you show Israeli war crimes are powered by Azure?” The following day, a protester described only as a “Palestinian tech worker” disrupted another executive‘s presentation.

In April, Microsoft employee Ibtihal Aboussad disrupted a 50th-anniversary event, calling Microsoft AI CEO Mustafa Suleyman “a war profiteer.” Another employee disrupted a second Microsoft event the same day. The acts of protest were organized by the No Azure for Apartheid group, which calls for Microsoft to terminate contracts with the Israeli government and endorse a permanent ceasefire, among other demands. Aboussad was fired from the company; the second protester, Vaniya Agrawal, was dismissed early after putting in her resignation.

Microsoft did not immediately respond to a request for comment. Eno, a longtime critic of the Israeli government who’s backed pro-Palestine efforts, said on Instagram he would use his original earnings from the Windows 95 startup chime to help “the victims of the attacks on Gaza.”