The band took its name from a character in the Mel Brooks movie Young Frankenstein, and the subtitler translated the name of the character Abby Normal (abnormal) into the Finnish equivalent Eppu Normaali (epänormaali, roughly 'abnormal'; a Finnish equivalent of the original play with words).
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(The brothers are the sons of accomplished writers Kirsi Kunnas and Jaakko Syrjä).
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They initially released albums in a punk pop style that gained favourable reviews, but the band did not gain mainstream acceptance until 1984 with what had evolved into a more AOR-oriented music style.