The foundation of most Western music is built on three essential chords: the tonic (I), the subdominant (IV), and the dominant (V). These chords form the backbone of countless songs. They make these chords some of the most important harmonic tools for any musician to master. And hence, they are useful to all musicians – those who play and songwriters.Most pop songs are made up of at least these three chords, if not only these three.
As a practical and highly useful technique exercise, I recommend learning and practicing the I-IV-V cadence in C major. This exercise not only strengthens your understanding of harmony but also builds dexterity and familiarity with the keyboard.
Let’s break this down using C major as an example:
- Tonic (I): The tonic chord is built on the first note (or scale degree) of the scale. In C major, this is the C major triad: C–E–G.
- Subdominant (IV): The subdominant chord is built on the fourth note of the scale. In C major, that’s F, so the triad is F–A–C (F major).
- Dominant (V): The dominant chord is built on the fifth note of the scale. In C major, that’s G, making the triad G–B–D (G major).
Each note in these triads comes directly from the C major scale. This means there are no accidentals, like C# or Bb, in these chords when working in this key.
One of the most helpful things about this pattern is its consistency. In every major key, the I, IV, and V chords are always major triads. You won’t find a minor, diminished, or augmented chord in a standard I-IV-V progression in a major key. This makes it easier to internalize the sound and shape of these chords as you move from key to key.
Example in F Major (with an Accidental)
Let’s look at the key of F major as an extra example. F major introduces a flat (Bb) in its key signature, so you’ll see Bb used instead of B natural in these triads.
- Tonic (I): The tonic chord is built on the first note of the F major scale, which is F. The triad is F–A–C (F major).
- Subdominant (IV): The subdominant chord is built on the fourth note of the F major scale, which is Bb. The triad is Bb–D–F (Bb major). Notice the Bb—this is the accidental required by the key signature.
- Dominant (V): The dominant chord is built on the fifth note of the F major scale, which is C. The triad is C–E–G (C major).
In this example, the subdominant chord (Bb major) contains the accidental Bb, which is not a white key on the piano. This demonstrates how practicing I-IV-V in different keys helps you become comfortable with accidentals and key signatures, not just the white keys.
About the Exercise:
The worksheet accompanying this post presents these chords to promote smooth voice leading. This means moving from one chord to the next with minimal movement between notes. Start by playing the tonic chord in root position. Then move through the subdominant and dominant chords. Focus on keeping your hand positions efficient and relaxed.
How to Practice:
- Practice the progression in both your right and left hands separately.
- Once comfortable, play with both hands together.
- Continue until you can play the I-IV-V progression in C major smoothly and confidently.
- Name the chords either aloud or in your head as you play, so you remember what they are.
- I’ve included a link to a video tutorial that will walk you through playing the cadence with the correct fingerings.
- Pay attention to the fingers. Consistency is key to making it stick in your mind and fingers.
Challenge:
After mastering the cadence in C major, explore other keys. Try to identify the I, IV, and V chords. Consider which notes make up each chord. Don’t forget to account for sharps and flats that might appear in other keys!
I’ll be providing future handouts with cadences in more keys—so stay tuned!
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