Lesson XXXI.  Fifth Species in Three or Four Parts.  Examples and
    Exercises.

    Lesson XXXII.  Fifth Species in All Parts, with Imitation. 
    Examples and Exercises.

    Florid melodies as canti firmi

    Lesson XXXIII.  Two-part Florid Counterpoint.  Free Harmonization. 
    Examples and Exercises.

    Lessons XXXIV and XXXV.  Three-part Florid Counterpoint.  Free
    Harmonization.  Examples and Exercises.

    Lesson XXXVI.  Three-part Florid Counterpoint (continued). 
    Exercise in Original Writing.

    Lessons XXXVII to XL.  Four-part Florid Counterpoint, Example and
    Exercises.

SIMPLE COUNTERPOINT

LESSON I

Counterpoint is the art of combining two or more melodies of equal melodic individuality.

In simple counterpoint all parts must remain in the same relative position to one another.

The Cantus Firmus is a given melodic phrase that is to receive contrapuntal treatment, that is, one or more parts are to be added above or below it.

The Counterpoint is any part other than the Cantus Firmus.

Intervals are harmonic or melodic.

An Harmonic interval is the difference in pitch between two tones sounding at the same time.

A Melodic interval is the difference in pitch between two tones sounded in succession by the same voice. [Fig. 1.]

[Illustration:  Fig. 1.]

Harmonic intervals are divided into Consonances and Dissonances.

Consonances are classed as perfect or imperfect.

The Perfect consonances are the Unison, Fifth, and Octave. [Fig. 2_a_.]

The Imperfect consonances are the Major and Minor Thirds and Sixths. [Fig. 2_b_.]

All other intervals are dissonances.

[Illustration:  Fig. 2.]

A Diatonic progression is one in which both name and pitch are changed. [Fig. 3_a_.]

A Chromatic progression is one in which the pitch is changed a semitone, while the name remains the same. [Fig. 3_b_.]

[Illustration:  Fig. 3.]

Progression from one chord to another is called Harmonic progression; from one tone to another, Melodic progression.

In melodic progression all major, minor, perfect and diminished intervals are allowed except the major and minor seventh.  The minor seventh may, however, be used when harmony does not change (a). [Fig. 4.]

[Illustration:  Fig. 4.]

In counterpoint there are Five Species, or orders.  When the counterpoint has one note for each note of the cantus firmus, it is of the First Species (a); if it has two notes for each note of the cantus firmus, it is the Second Species (b); if four notes, the Third Species (c); if two notes syncopated, the Fourth Species (d); and a mixture of these species is the Fifth Species, or Florid Counterpoint (e). [Fig. 5.]