I’m trying to understand the key of a song that uses chords out of the scale

Understanding the Key of a Song with Chords Outside the Scale

Non-diatonic chords are an intriguing aspect of music theory. When a song incorporates chords that are outside of the scale, it adds complexity and interest to the harmonic structure. In this article, we will explore the concept of non-diatonic chords, their impact on the key of a song, and techniques for incorporating them effectively.

Non-Diatonic Chords: Breaking the Mold

Songs that utilize chords outside of the scale are incorporating non-diatonic chords. Put simply, non-diatonic chords contain one or more notes that are not part of the scale of the key. These chords introduce fresh melodic and harmonic possibilities, expanding the tonal palette of a song.

Diatonic vs. Non-Diatonic: Understanding the Difference

To grasp the significance of non-diatonic chords, it is essential to understand the contrast with diatonic chords. Diatonic chords consist of notes that are within the scale of the key. They are considered the “standard” chords that naturally fit within the key. In contrast, non-diatonic chords contain notes that fall outside of the scale and introduce new tonal flavors.

Tension and Resolution: Adding Depth to Chord Progressions

Non-diatonic chords can create tension in a chord progression due to the clash between the non-diatonic notes and the notes in the scale. This tension adds emotional depth and complexity to the music. When used effectively, non-diatonic chords can enhance the listener’s experience by providing moments of surprise and anticipation.

The resolution of tension is a crucial aspect of music composition. Non-diatonic chords can be resolved by transitioning to diatonic chords that are within the key. This resolution creates a satisfying musical release and helps maintain the overall coherence of the song.

The Common Note Approach: Smoothing Transitions

Incorporating non-diatonic chords smoothly requires careful attention to the transitions between chords. One effective technique is the common note approach. This approach involves using a common note from the diatonic chord and incorporating it into the non-diatonic chord. By doing so, the listener’s ear can find familiarity in the transition, making it feel more natural and seamless.

The common note approach helps maintain the tonal connection between chords and minimizes any potential dissonance. It allows the non-diatonic chord to function as a temporary departure from the key while still maintaining a sense of harmonic cohesion.

Conclusion

In summary, incorporating chords outside of the scale, known as non-diatonic chords, can add depth, tension, and excitement to a song. Understanding the contrast between diatonic and non-diatonic chords is crucial for comprehending their impact on the key of a song. Techniques such as the common note approach can help smooth transitions and maintain harmonic coherence. By embracing non-diatonic chords, musicians can explore new creative possibilities and elevate their compositions.

Sources:

• “How to Write a Chord Progression Using Chords Not in the Key” by Hack Music Theory (https://hackmusictheory.com/blogs/theory/posts/4658531/how-to-write-a-chord-progression-using-chords-not-in-the-key)
• “How to make songs with chords that don’t belong in a scale?” on Music: Practice & Theory Stack Exchange (https://music.stackexchange.com/questions/12623/how-to-make-songs-with-chords-that-dont-belong-in-a-scale)
• “Name That Key – Find a Song’s Key by Its Chords” on Music Theory Site (http://musictheorysite.com/namethatkey/)

FAQs

Can a song have chords that are outside of the scale?

Yes, a song can definitely have chords that are outside of the scale. These chords are known as non-diatonic chords and they introduce new tonal possibilities.

How do chords outside of the scale affect the key of a song?

Chords outside of the scale can impact the key of a song by introducing tension and complexity. They create a departure from the established tonal center and add depth to the harmonic structure.

How can I identify the key of a song that uses chords outside of the scale?

Identifying the key of a song with non-diatonic chords can be challenging. One approach is to analyze the relationships between chords, look for recurring chord progressions, and listen for resolutions that provide clues to the tonal center.

Are there any specific techniques for incorporating chords outside of the scale smoothly?

Yes, one technique is the common note approach. By using a common note from the diatonic chord and incorporating it into the non-diatonic chord, you can create a smoother transition between chords and maintain a sense of coherence.

Can non-diatonic chords add interest and excitement to a song?

Absolutely! Non-diatonic chords can add interest and excitement to a song by introducing unexpected harmonies and creating moments of tension and release. When used effectively, they can elevate the emotional impact of the music.

Are there any limitations or guidelines when using chords outside of the scale?

While chords outside of the scale offer creative possibilities, it’s essential to use them judiciously. Care should be taken to ensure that they enhance the overall musical experience and do not disrupt the flow or coherence of the composition.

Can non-diatonic chords be resolved back to diatonic chords?

Yes, non-diatonic chords can be resolved back to diatonic chords within the key. This resolution creates a sense of closure and helps maintain the tonal connection and overall structure of the song.

Can non-diatonic chords be used in any genre of music?

Absolutely! Non-diatonic chords can be found in various genres of music, including jazz, blues, rock, and pop. They provide musicians with a means to explore unique harmonic possibilities and add depth and interest to their compositions.