Example 10 ADDITION OF ALTO TO SOPRANO PART GIVEN SIMPLE HARMONIC PROGRESSION

Now, given the chords and Soprano part, we can add the Alto. We can introduce some simple rhythmic independence from the Soprano part, and also ensure there is no unwanted parallel motion. Notice how the non-diatonic G in bar 2 (which is flatter than the diatonic G#) resolves down a semitone to F#.