The Ilosaarirock Festival is an annual rock festival Social_event held on the second weekend of July in Joensuu , Eastern Finland .

Founded in 1971 , Ilosaarirock is the second oldest rock festival Social_event in Finland still active , and one of the oldest in Europe .

Ilosaarirock is an entity of events that in its entirety , with clubs and side-events , spans from Friday to Sunday .

Including Cause_to_be_included all events , Ilosaarirock weekend hosts over 100 artists .

Ilosaarirock is organized Arranging mainly by volunteers and is put together Come_together by over 1,500 volunteer workers .

The Ilosaarirock festival Social_event ’ s graphic look Perception_active is chosen Choosing through an open Openness design contest Competition every year .

The Ilosaarirock festival Social_event is organised Arranging by Joensuu Pop Musicians ' Association , which is a non-profit organisation .