Download VeeR from App store to see this video in VR! Supercrawl was founded in 2009 by Tim Potocic and the music label Sonic Unyon. It grew out of the monthly event known as Art Crawl, a tour of art galleries in Hamilton that is still active. Supercrawl features three days of free music spread over multiple stages lining the length of James Street North. The festival attracts an average of 130,000 visitors annually to watch over 50 bands, making it one of the largest free music festivals in Ontario. The festival also showcases large-scale visual art installations, performance art, an artisan market, food trucks and fashion.