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fi

Etymology 1 n. (context music English) The solfeggio syllable used to indicate the sharp of the fourth note of a major scale. Etymology 2

abbr. (context computer science English) The end of an "if" program instruction, usually as shorthand.

Wikipedia

Fi (album)

fi is the debut studio album by English record producer Bibio (Stephen Wilkinson). It was released on Mush Records in February 2005.