EntityQ5277371· pop 5· linked from 98 articlesdiminished fourthSign in to savemusical interval produced by narrowing a perfect fourth by a chromatic semitone (e.g. from C♯ to F or from C to F♭); enharmonically equivalent to a major thirdConnectionssemitoneEntityquarter toneEntityminor thirdEntityInternational Standard Book NumberEntityclassical musicEntitymusic theoryEntityoctaveEntityintervalEntityWestern cultureEntityunisonEntitytritoneEntityequal temperamentEntitycentEntityenharmonicEntityjust intonationEntityconsonance and dissonanceEntitymicrotonal musicEntityinversionEntityPythagorean commaEntityninthEntityCategoriesDiminished intervalsFourths (music)