Seven EP was released in the interim between the touring of the band's début album and the recording of their second album, Six. The music on the EP reveals a transitional sound, in which the club-crossover britpop style of their earliest work is left behind for a more organic sound, one closer to progressive rock and post-punk. The EP sleeves are notable as they was adorned with two paintings by Stuart Sutcliffe.
Seven EP was released on Two CDs, and 7" Vinyl. CD Part One featured four new songs recorded during a session at Parr Street Studios. CD Part Two and the 7" featured live and acoustic versions of older material. "Everyone Must Win" was the first collaboration between the group and the Magazine front-man Howard Devoto. Magazine had been cited by Draper as a major influence particularly for their mix of synths and guitars. "K.I.Double.S.I.N.G." is the first Mansun song in which bassist Stove King and drummer Andie Rathbone receive writing credits. Draper explained in the liner notes to Kleptomania that "The World's Still Open" was originally intended as the lead track but was relegated for being "too commercial".