The Rock en Seine festival is a two or three-day Rock 'n roll festival, held at Domaine National de Saint-Cloud, Château de Saint-Cloud's park West of Paris, inside the garden designed by Le Nôtre. It is the festival at which Oasis split up on 28 August 2009 after Liam and Noel Gallagher had a fight just before they were due to headline the main stage.

The name is a pun, based on exactly the same pronunciation in French of the words "scène" meaning stage and Seine (the river separating Saint-Cloud from Central Paris after which département Hauts-de-Seine is called).

The festival takes place in the down of the Park of "Domaine national de Saint-Cloud", it's a magic and historic place at the gates of Paris, and 5 minutes from the nearest subway station métro Boulogne - Pont de Saint-Cloud.

The park and the garden, was designed by Le Nôtre in the 17th century, and it's the first park to be classed as a Monument historique in 1994. It is a 4.6 km² park, and there are gardens and forest with basins, thickets, cascades and statues.

The Chemical Brothers are a British electronic music duo composed of Tom Rowlands and Ed Simons. Originating in Manchester in 1991, along with The Prodigy, Fatboy Slim, The Crystal Method, and fellow acts, they were pioneers at bringing the big beat genre to the forefront of pop culture.

Ed Simons was born in Herne Hill, South London on 9 June 1970 to a barrister mother and a father who was not around much when Simons was growing up. Simons' two main interests when he was young were aeroplanes and musicals. Simons attended two South London public schools, Alleyn's School and Dulwich College. During his school years, he developed a fondness for rare groove and Hip hop music, having frequented a club called The Mud Club from the age of 14. By the time he left school, his two main musical interests were two Manchester bands, New Order and The Smiths. After finishing school with 11 O levels and three A-levels, he continued on to study history, especially late medieval history, at the University of Manchester.^{[citation needed]}