High Quality Content by WIKIPEDIA articles! Edgefest, a yearly outdoor rock concert festival that primarily promotes Canadian rock music, began in 1987 as a thank-you gesture to the listeners of Toronto radio station 102.1 the Edge and as a birthday party to commemorate both the station`s tenth birthday, and the coinciding Canada Day. Since then, it has spanned 20 years, over 300 bands, over 500,000 attendees, and 4 locations (Molson Park in Barrie, Ontario, the Ontario Place Forum, the Molson Amphitheatre, and most recently Downsview Park). It is now the longest running rock show in Canada.