First Species Counter Point
First Species Counter Point
Rules
- Opening harmonic interval (HI)
↦
8
or U
↦ 5
If tonic in the lower voice
- Closing HI
↦
6 ↗ 8
/ 3 ↘ U
/ 10 ↘ 8
↦ minor: raise the flat 7
and flat 6
(if the 6
is before the 7
, cause we don’t want a 2aug
)
- Write mostly contrary motion
- Avoid parallel
8
or 5
by parallel or contrary motion
- Approach perfect intervals by contrary motion OR similar motion (if one voice is going by a step)
- Don’t write more than 3 parallel imperfect consonances in a row
- Include a mix of perfect and imperfect consonances with more imperfect than perfect ones
- Avoid dissonant HI (including 4) and accidentals (other than at the closing)
- Avoid dissonant melodic intervals (MI) (e.g.
7M
, 7m
, 5dim
, 4dim
, 2aug
, 2
)
- Write leaps sparingly
- Don’t overlap or cross voices
- Don’t go around a note too much
- Aim for primarily step-wise motion with no more than 2 melodic skips or leaps in a row