MT1 - Part Writing Root Position Triads

Primary Triads

I-V-I chord progression

A skeleton structure for most tonal works

Features a common tone in one voice part while the others move

Method 1

• Notate the first train, doubling root for root position

• Notate the bass note of the next chord 

• Moving from I-V, keep in the same voice part (soprano, alto, tenor) the common tone

• When the root P5, the reminding two voice parts move DOWN by step 

When the root ascends by P5 (1-5)

• Notate the first train, doubling root for root position

• Notate the bass note of the next chord 

• Moving from V-I, keep in the same voice part (soprano, alto, tenor) the common tone

• When the root P5, the reminding two voice parts move UP by step 

When the root descends by P5 (5-1)

One voice holds while the other parts move

Oblique motion