At the top of a short list of essential European music festivals, Denmarks four-day Roskilde Festival is such an epic undertaking that it begins with a four-day warm-up of Nordic acts, epic parties and engaging talks just to get you ready. Something akin to summer camp for adults, Roskilde hosts some of the biggest names and most exciting upcoming stars in music, all for a good cause (the event is run by the Roskilde Festival Charity Society, who has raised more than 25 million to date). Roskilde Festival - A Musical BeginningRoskildes roots trace back to 1971, when high school students Mogens Sandfaer and Jesper Switzer Moller joined forces with promoter Carl Fischer. Their intention was to create a festival in Denmark with the same feel as large music festivals like the Newport Jazz Festival and Isle of Wight. More Info below.