Ratcat were an Australian indie rock band of the late 1980s and early 1990s fronted by Simon Day. Their combination of indie pop songwriting and energetic punk-style guitar won them fans from both the indie and skate-punk communities. Ratcat formed in 1986 in Sydney and were a mainstay of that city's live music scene until they were eventually signed to Waterfront Records where they released a self-titled EP, several singles ("I Think I Love You", "Baby's Got A Gun") and their debut album, This Nightmare in 1989. Another EP, Killing Joke, and another single, "Saying Goodbye" followed.

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