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Concept index · Counterpoint

Parallel fifths and octaves

What are parallel fifths and why are they forbidden?

Parallel fifths and octaves are two voices moving from one perfect fifth or octave straight into another; Kitson’s first rule of strict counterpoint is that “consecutive octaves or fifths are forbidden,” and Fux allows a perfect consonance to be reached from an imperfect one only by contrary motion.

From Counterpoint for Beginners · Gradus ad Parnassum

Taught in 10 books. Each one opens at the passage; ▶ plays the example beside it. Also called parallel fifths, parallel octaves, consecutive fifths, hidden fifths.

This index is Playable Books’ own: a first pass that finds the term’s words in each book, corrected by hand. The authors did not tag these passages, and their terms can differ (Fux’s “ligature” is a suspension). The quoted text is the book’s.

Gradus ad ParnassumJohann Joseph Fux, 1725

Start: First species counterpoint: note against note →

Exercises in Elementary CounterpointPercy Goetschius, 1910

Counterpoint AppliedPercy Goetschius, 1902

Counterpoint for BeginnersC. H. Kitson, 1927

Start: Chapter I. First Species →

2 more passages in Counterpoint for Beginners →

Treatise on HarmonyJean-Philippe Rameau, 1722

Start: Chapter five → Start: Chapter seventeen →

26 more passages in Treatise on Harmony →

Practical Manual of HarmonyNikolai Rimsky-Korsakov, 1910

Start: Forbidden Motions →

11 more passages in Practical Manual of Harmony →

Guide to the Practical Study of HarmonyPyotr Ilyich Tchaikovsky, 1900

21 more passages in Guide to the Practical Study of Harmony →

Theory of HarmonyArnold Schoenberg, 1922

Start: Parallel octaves and fifths →

37 more passages in Theory of Harmony →

Principles of OrchestrationNikolai Rimsky-Korsakov, 1922

OrchestrationCecil Forsyth, 1914

More in Counterpoint

Species counterpoint · Cantus firmus · Consonance and dissonance · Contrary, oblique and similar motion · Voice leading · The melodic line

All concepts · Search every passage for “parallel fifths”