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Invaders Must Die is the fifth studio album by English electronic dance music group The Prodigy. The album was released on 23 February 2009 on the band's new record label Take Me to the Hospital, and was distributed by Cooking Vinyl.

The album was a commercial success, faring better than Always Outnumbered, Never Outgunned. In contrast to the commercial performance, critical reaction to the album was mixed. It has spawned four singles, including the title track, "Omen", "Warrior's Dance", and "Take Me to the Hospital".

Recording began in February 2006, shortly after the release of Their Law: The Singles 1990–2005, and ended in November 2008. Some of the songs recorded for the album, such as the synthesizer-led "Colours" were written before the release of the group's fourth album, and early versions were showcased in live performances. Liam Howlett conceived the album musical direction as a mashup of their previous albums. The new album was set to be released in summer 2007, but when the album's release date was postponed to the "first quarter of next year [2008]," the band had conceived over 25 ideas while completing production on certain tracks and writing lyrics.

Howlett revealed in an April 2008 interview that he had three more months of work left for the new album. He also said that he has a working album title and song titles, but was not ready to publicly announce them until these details were released through The Prodigy's official newsletter on 4 November. This announcement stated that the album would be a return to their "old-school but cutting edge" roots, and would feature collaborations with Dave Grohl of Foo Fighters, Them Crooked Vultures, and Nirvana, and James Rushent of Does It Offend You, Yeah?, but would not feature any guest vocals.

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