Northwestern’s first Greek Week hit a bump as its biggest event — an outdoor concert by pop-rock band Blessid Union of Souls — was canceled, orgnizers said Tuesday.

The band’s promoter informed event organizers Tuesday afternoon that lead singer Eliot Sloan would be unable to perform in Friday’s free concert because he must undergo surgery for a broken shoulder.

“Sometimes you can’t foresee these things,” said Steve Pomerantz, Interfraternity Council vice president for programming and a Weinberg sophomore.

Students have been planning the concert for more than six months, IFC President Jeremy Esposito said.

“This is something that’s been in the works forever and to have a band flake on you two days before is extremely disappointing,” said Esposito, a Medill junior. “A lot of these other activities are good, but this is the one cornerstone activity of the week.”

Greek Week organizers will apply to transfer the $10,000 in funding allocated for the concert by Student Activities Finance Board to next year’s event, Esposito said.

“We’re upset about it, but we really had no control over it,” said Kelly Knorr, Panhellenic Association vice president for public relations and a Weinberg junior.