Complex sentence: In 1985, the band released the EP "25 O'Clock" under the pseudonym "the Dukes of Stratosphear", an homage to 1960s psychedelic music that outsold XTC's previous album "The Big Express" (1984).
Split into simpler sentences: In 1985, the band released the EP "25 O'Clock" under the pseudonym "the Dukes of Stratosphear". The album was an homage to 1960s psychedelic music that outsold XTC's previous album "The Big Express" (1984).