Midsummer day simply refer to the period of time centered upon the summer solstice, but more often refers to specific European celebrations that accompany the actual solstice, or that take place on a day between June 21 and June 24, and the preceding evening. The exact dates vary between different cultures. Midsummer is especially important in the cultures of Scandinavia and Latvia where it is the most celebrated holiday apart from Christmas.

European midsummer-related holidays, traditions, and celebrations are pre-Christian in origin. They are particularly important in Northern Europe - Sweden, Norway, Denmark, Estonia, Finland, Latvia and Lithuania – but are also found in Germany, Ireland, parts of Britain (Cornwall especially), France, Italy, Malta, Portugal, Spain, Ukraine, other parts of Europe, and elsewhere - such as Canada, the United States, Puerto Rico, and also in the Southern Hemisphere (mostly in Brazil, Argentina and Australia), where this imported European celebration would be more appropriately called Midwinter.

Ferry Corsten, also known under the alias System F, (born 4 December 1973) is a Dutch producer of trance music, in addition to being a DJ and remixer. He also hosts his own weekly radio show, Corsten's Countdown. He routinely plays at events all over the world with crowds in excess of tens of thousands. In 2009 Ferry Corsten ranked #7 on DJ Magazine's annual Top 100 DJ Poll, dropping to #9 and #18 in subsequent years.

Ferry Corsten was born in Rotterdam, Netherlands. He has produced and remixed under many aliases since the release of his first record at the age of sixteen, but he officially started to work as a musician when he was 17 years old. As a teenager he saved money to buy his first keyboard by washing cars, and selling mix tapes to kids in his neighbourhood. He later began to perform live performances with a friend and won his first award "De Grote Prijs van Nederland" at Holland in 1989. He eventually released a record with a couple of friends when he was just sixteen years old and later began releasing self-made productions while he grew up in Rotterdam in the 1990s, producing underground hardcore gabber tracks, later expanding into club-house and trance music. His first single to reach a chart position was "Don't Be Afraid" under the alias Moonman, which was only the start for becoming a composer as well. In 1997 Corsten and his partner Robert Smit established a dance label named Tsunami with the Dutch based dance company Purple Eye Entertainment b.v., this junction made the creation of another label possible; Polar State. Ferry Corsten was studying to become an Electrical Engineer, so he went to the Technical Training School and after that Higher Technical Education.