Question

Demonstrate three good ways to partwrite this progression. The soprano line should be different in each solution, and each chord should contain two roots, a third, and a fifth.

Answer 1

Step-by-step explanation:

Here’s a brief example of 4-part harmony from the music of J. S. Bach. Notice that there 2 main aspects to it. Firstly, there are 4 voices and each one is singing a melody. This is the melodic, or the ‘horizontal’, aspect of the music. Secondly, the four voices are singing at the same time

Answer 2

Three good ways to partwrite a harmonic progression with different soprano lines for each solution.

Let's start with a simple harmonic progression in the key of C major (I-IV-V-I) and create three different soprano lines for each solution while maintaining two roots, a third, and a fifth in each chord.

Harmonic Progression: C - F - G - C

Solution 1: Soprano Line: G - A - B - C
C major chord: E, G, C
F major chord: A, C, F
G major chord: B, D, G
C major chord: E, G, C

Solution 2: Soprano Line: E - D - C - G
C major chord: E, G, C
F major chord: A, C, F
G major chord: B, D, G
C major chord: E, G, C

Solution 3: Soprano Line: C - E - G - A
C major chord: E, G, C
F major chord: A, C, F
G major chord: B, D, G
C major chord: E, G, C

In each solution, the soprano line moves stepwise, providing a different melodic contour while maintaining the harmonic structure with two roots, a third, and a fifth in each chord.