By OnMilwaukee Staff Writers   Published Aug 05, 2011 at 11:39 AM

Opera lovers at last night's Florentine at the Lake event got an entertaining surprise during intermission.

Over 30 Irish dancers kicked up their heels in a fun flash mob performance during the intermission at the Florentine Opera's free concert at Alterra at the Lake.

The dancers' impromptu show served as an exciting preview for this year's upcoming Irish Fest, Aug. 18-21.

Video of the performance is below, courtesy of Milwaukee Irish Fest.