“Flow is already a tradition for many Helsinki residents. It’s the one summer party to look forward to and also a late summer celebration,” said Tuomas Kallio, the festival’s Artistic Director, when we spoke with him last year. But not only that. It is also one of the most important music festivals in in Europe. Because after almost twenty years of bringing top-class acts to the Finnish capital, Flow has become a staple in the city’s culture as well as an unmissable event for many international artists and festival-goers.