What Are Secondary Dominants in Music Theory?

What Are Secondary Dominants in Music Theory?

Posted on November 19, 2025 by Emmeline Pankhurst

Quick Answer

Secondary dominants are special chords that enhance a musical piece by acting as temporary dominants for chords other than the main tonic. They create a momentary shift in the listener’s ear, adding a delightful twist to the harmony. Essentially, secondary dominants lead to non-tonic chords, creating tension and enriching the music.

Understanding these colorful chords will transform how you listen to music, inviting you to explore how they fit into the broader landscape of harmony.

What Is a Secondary Dominant?

Imagine you’re at a concert and the music suddenly takes an unexpected turn that captivates you. That’s the magic of secondary dominants. A secondary dominant is a chord that acts as the “dominant” (or V chord) to a chord other than the tonic. It’s like inviting a guest star to your musical show to highlight another character, creating a mini-drama within your composition.

These chords are akin to musical chameleons, temporarily altering the harmonic landscape to provide anticipation and resolution, but directed towards a chord that isn’t the main tonic. For example, in C major, the primary dominant is G7 resolving to C. To momentarily focus on D minor, you’d use A7 (the dominant of D minor)—and voilà, you’ve got a secondary dominant. Tools like Piano Companion, a flexible music theory app for songwriters, producers, teachers, and students, can help you explore and identify these complex chords and scales, making it easier to grasp concepts like secondary dominants.

Primary dominants are the superheroes of harmony, always leading to the tonic. Secondary dominants are the sidekicks, occasionally stealing the scene with unexpected flavors that keep the audience engaged. This difference is crucial because it opens up a universe of creative possibilities for composers and musicians.

Understanding secondary dominants is like having a secret ingredient in your musical toolkit, leading to exciting opportunities in your compositions.

Why Use Secondary Dominants in Your Music?

Imagine you’re cooking and you add a secret spice that makes everyone say, “Wow, what is that flavor?” That’s what secondary dominants do for your music—they provide an unexpected burst of color and tension. Introducing a secondary dominant gives your listeners a musical nudge, adding depth and intrigue. It’s like an unexpected plot twist in your musical story.

Secondary dominants enhance harmonic progression, providing smooth yet surprising transitions between chords, guiding the listener on a delightful journey. For instance, in a piece in G major, using E7 to resolve to A minor adds drama and anticipation before returning to the comfort of G major. This technique enriches the music, keeping it engaging and unpredictable.

In my teaching experience, I’ve seen students’ compositions transform when they experiment with secondary dominants. Their music gains a new dimension, stepping out of the ordinary into the realm of the intriguing. Whether writing a simple melody or a complex symphony, these chords can captivate your audience.

As you explore secondary dominants, you might wonder how to recognize them in the wild…

How Do You Identify Secondary Dominants?

Identifying secondary dominants in sheet music is like being a musical detective. You’re searching for clues hinting at these exciting harmonic moments. Here’s a guide to help you spot them:

  • Look for Unexpected Accidentals: Secondary dominants often introduce accidentals that aren’t part of the key signature. A sharp or flat that seems out of place might signal a secondary dominant.
  • Check the Function: Once you spot an unexpected chord, ask if it leads into another chord as a dominant would. In C major, if an E7 chord leads to A minor, you’ve likely found a secondary dominant (V/vi).
  • Analyze the Progression: Examine the chord progression for V-I movements that don’t resolve back to the tonic. Secondary dominants create temporary focus away from the main key.

Consider common chord progressions featuring secondary dominants. A classic example is the ii-V-I progression, with a twist: A7 (V/ii) resolving to D minor in C major, before moving to G7 and finally C. This unexpected turn adds a fresh layer of tension and release.

Recognizing secondary dominants can transform your understanding of harmony and open up new possibilities in your compositions. Once you’ve spotted these chords, the next exciting step is to incorporate them creatively into your musical pieces.

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How to Use Secondary Dominants in Composition?

In composition, secondary dominants can be your secret asset, infusing your music with vibrancy and depth. Here’s how to effectively incorporate these dynamic chords into your compositions:

  • Identify Target Chords: Determine which chords in your progression could benefit from extra attention. Perhaps a minor chord needs drama or a major chord could use sparkle.
  • Emphasize Key Changes: Use secondary dominants to transition smoothly between keys, especially useful in longer compositions to maintain interest.
  • Create Tension and Release: Insert secondary dominants where you want to build tension, acting as a musical cliffhanger leading to a satisfying resolution.
  • Experiment with Rhythm and Dynamics: Accent your secondary dominants with changes in rhythm or dynamics to highlight their role in the progression.

To see these techniques in action, look to jazz and pop music. In jazz standards, secondary dominants are as commonplace as saxophone solos. In “Autumn Leaves,” notice how they propel the progression forward through lush harmonic landscapes. In pop music, artists like The Beatles use them for surprise and sophistication, as heard in “Something.”

When you start using secondary dominants, your creative palette expands. However, it’s important to be mindful of potential pitfalls in your compositions.

What Are Common Mistakes to Avoid?

While secondary dominants can transform your music into a vibrant soundscape, there are common mistakes to avoid to strike perfect harmony.

A common pitfall is overusing secondary dominants. It’s like adding too much salt to a favorite dish—it might overpower the natural flavors. In my early composing days, I was so enamored with these chords that I overused them, making my music a dizzying rollercoaster ride. The key is moderation. Use secondary dominants where they enhance the music, providing surprise without overshadowing the main progression.

Another challenge is misidentifying secondary dominants. Students sometimes mistake any chord with accidentals as a secondary dominant. Just because a cat meows like a lion doesn’t make it the king of the jungle. Similarly, a chord with accidentals isn’t automatically a secondary dominant. Verify its function—does it resolve to a non-tonic chord like a dominant should? Proper identification requires careful listening and analysis.

Mastering these nuances elevates your compositions. Now, let’s explore practical examples showcasing the transformative power of secondary dominants.

Can You Provide Examples of Secondary Dominants?

Let’s explore real-world examples of secondary dominants in action, demonstrating their ability to elevate music, whether it’s a pop hit or a classical masterpiece.

In pop music, The Beatles’ “Something” is a prime example. Listen to how the progression takes unexpected turns, particularly when the melody moves through E7 to A in the key of C major. This secondary dominant, E7 (V/vi), beautifully bridges the verse’s emotions, adding surprise and deepening the song’s impact. Such moments are like musical plot twists, engaging listeners and keeping them eager for what’s next.

In classical music, Beethoven’s “Piano Sonata No. 8,” or “Pathétique,” showcases masterful use of secondary dominants. In the first movement, these chords create dramatic tension and release. As the music transitions through keys, secondary dominants provide anticipation, guiding the listener through a rich tapestry of emotions, like a well-orchestrated play.

These examples highlight the versatility of secondary dominants in music composition. Whether crafting a pop ballad or a classical sonata, these chords can significantly enhance your musical storytelling. To reinforce your understanding, let’s wrap up with key takeaways.

Key Takeaways

  • Secondary dominants act as temporary dominants to non-tonic chords, adding interest and tension.
  • Identify them by spotting unexpected accidentals leading into another chord as a dominant would.
  • Use them to enhance harmonic progression, create tension, and transition smoothly between keys.
  • Avoid overusing secondary dominants to prevent overwhelming your composition.
  • Practice recognizing and incorporating these chords into your music to unlock their full potential.

Remember, like any great artist, your journey with secondary dominants is just beginning. Embrace the creativity they offer, and let your compositions sing with new vibrancy!