Fifths

Unacceptable unequal 5ths

Unacceptable unequal 5ths
  1. What is an unequal fifth?
  2. Are unequal fifths allowed?
  3. Are parallel 5ths allowed?
  4. What are hidden parallel fifths?

What is an unequal fifth?

Unequal fifths are a pair of fifths where one is perfect and the other isn't (most usually a diminished fifth). ... Here is an example of unequal fifths. The top voices (soprano and alto) move from a perfect fifth to a diminished fifth.

Are unequal fifths allowed?

The reverse, a rising P5→d5, is acceptable voice leading (no deduction). Unequal fifths in either order, when descending, are acceptable (no deduction).

Are parallel 5ths allowed?

"The parallel fifths [in the German sixth] arising from the natural progression to the dominant are always considered acceptable, except when occurring between soprano and bass. They are most often seen between tenor and bass.

What are hidden parallel fifths?

A hidden fifth occurs when an implied consonant passing note would create a parallel fifth. A hidden octave occurs when an implied consonant passing note would create a parallel octave.

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