(JTA) – American Jewish singer Matisyahu sang his song “Jerusalem” as protesters waved Palestinian flags at a music festival in Spain. Matisyahu performed a 45-minute set early Sunday morning, August 23, at the Rototom SunSplash Festival, two days after the festival apologized for canceling his performance in the face of pressure from the Boycott, Divestment and Sanctions, or BDS, movement. Some in the audience expressed disapproval when the artist took the stage, including chanting “out, out,” but many others applauded the singer, whose given name is Matthew Miller.

“Whoever you are and wherever you come from raise a flag and wave it in the air,” Matisyahu said before his closing song. “Let music be your flag.” Later he posted on his Facebook page: “Tonight was difficult but special. Thank you to everyone who made it possible! Every chance to make music is a blessing.”

Matisyahu is not Israeli, but was singled out by BDS activists because he was the only Jewish performer on the festival’s roster. Last week, after he ignored requests that he issue a statement declaring his support for Palestinian statehood, the festival cancelled his appearance. That sparked condemnation from Jewish organizations, the government of Spain and Matisyahu himself, who wrote on his Facebook page Monday that the festival organizers’ behavior had been “appalling and offensive.”