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→Fux's Voice Leading Rules
=== Fux's Voice Leading Rules ===
The table below describes voice leading rules in terms of intervals, or just two notes. Each note of the current interval will either move or remain constant in order to form the destination interval. Depending on the type of current (source) and destination intervals desired, there will be certain preferred types of motion.
{| class="wikitable"
! !! Interval<br>Type !! Perfect !! Imperfect
|-
!rowspan="2"| CurrentSource
! Perfect
|
These can be reduced to 2 simple rules:
# If the destination interval is ''perfect'', only contrary or oblique motion can be used.
# Parallel motion can only be used if the current source and destination intervals are ''imperfect''.
If "perfect/imperfect" is confusing in describing the intervals, see the table below. The only '''perfect intervals''' are the perfect 4th, perfect 5th, and unison (or octave).