It's believed to be the world's biggest blind date event, according to organizers.

More than 1,000 singles descended on Toronto's Ed Mirvish Theatre on Wednesday for a night of music and romance – or the possibility of it.

The blind date event, which was organized by the producers of the musical "Once," was part of Wednesday night's Tony Award-winning show.

Mirvish Productions spokesperson John Karastamatis said that because the musical is about two people who meet for the first time, the show is an ideal backdrop for "something magical" to happen on a blind date.

"It may only happen with one couple, it may only happen with two couples, maybe it will happen with no one but we think it will be an electric performance," Karastamatis told CTV Toronto ahead of the 8 p.m. show.

The 1,200 singles were selected from a group of 600,000 theatregoers to participate in the event.

More than 5,000 people registered and they were asked six questions, including their age and the name of their favourite musical. A computer program then matched up the singles, creating 600 couples who sat together and met each other for the first time on Wednesday. The couples were not even provided a photo of their date prior to the show.

Wednesday's intermission was also 10 minutes longer than usual so couples could get to know each other -- or flee if things aren't going well.

"Once" is playing at the Ed Mirvish Theatre until June 28.

With a report from CTV Toronto's Scott Lightfoot