Revised June 6, 2026

Harpists tend to talk about enharmonics, or enharmonic equivalents frequently. It's one of those concepts that is less relevant on other instruments, but is quite significant on the harp, since the harp can produce the same pitch on different strings.

In this guide, we will discuss what enharmonics are, how they work on the harp specifically, and three practical ways you can use them as a composer.

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What Is an Enharmonic Note?

An enharmonic is defined as:

"Relating to notes that are the same in pitch (in modern tuning) though bearing different names (e.g., F# and G♭ or B and C♭)." (Oxford Languages)

On the piano, this distinction is mostly irrelevant. F# and G♭ are the same key. You might choose one spelling over the other for theoretical reasons, but it doesn't affect how the note sounds or is played.

On the harp, each string is tied to a specific letter name — C strings always produce some form of C (flat, natural, or sharp), D strings always produce some form of D, and so on. So even though C# and D♭ are the same pitch, they're played on different strings. That means different pedal positions, potentially different finger patterns, and a slightly different timbral quality.

Not Every Note Has an Enharmonic Equivalent

Due to the nature of the double-action pedal harp, not every note has an enharmonic equivalent. Each string can produce three pitches (or can be altered twice): the flat, natural, and sharp. (To learn more about the double-action pedal harp, see How do Pedals Work on the Harp.)

Here is a list of the available enharmonics on the harp:

• C#/D♭
• D#/E♭
• E/F♭
• E#/F
• F#/G♭
• G#/A♭
• A#/B♭
• B/C♭
• B#/C

Since double sharps and double flats are not possible on the double-action pedal harp (it would require a triple-action pedal harp), the following notes do not have enharmonic equivalents:

• D (would require C## or E♭♭)
• G (would require F## or A♭♭)
• A (would require G## or B♭♭)

Three Ways Composers Can Use Enharmonics

1. Repeated Notes

Repeated notes on the harp can be tricky. In order to play a repeated note, the finger must replace on the same string a split second before replaying, which causes a stop in sound. For this reason, rapid repetition on a single string is impractical at faster tempos. However, if you use two different strings producing the same pitch, you can repeat that pitch at a much faster tempo, even as a timbral trill. You can also use this technique to achieve a more legato sound, rather than the detached sound that occurs from repeating the same string.

Élias Parish-Alvars used enharmonic repetitions extensively. His La Mandoline, Op. 84 is a well-known example. Note that older scores might not notate the enharmonic repetition, but modern guidelines recommend notating the played pitches.

2. Chordal Glissandos

The default for harp glissandos is a scale, with each string playing a different pitch. However, with enharmonics, you can create chordal glissandos by enharmonically doubling specific pitches to imply a chord. For instance, instead of playing a C major scale glissando (C–D–E–F–G–A–B), you could use enharmonics for E and B (C–D–E#–F–A–B#), which sounds more like a C major chord.

3. Idiomatic Solutions

Harpists can also use enharmonic respellings to adjust awkward interval spacings or solve pedal challenges. In the case of spacing, an enharmonic can allow an otherwise awkward pattern to fit more comfortably in the hands, which can be necessary at faster tempos or in the extreme registers. For instance, C–F–A–C requires a large gap between fingers 3 and 4 (middle and ring finger). This pattern could be more manageable as C–E#–A–C.

Quick pedal changes on the same side of the harp can prove complicated if enough time is not allowed. But in some cases, an enharmonic pedal change can provide a solution. For instance, if an E♭ and F# pedal needed to be changed simultaneously, the E♭ could potentially be respelled as a D#.

At a larger scale, harpists sometimes rewrite entire passages enharmonically to reduce awkward shifts between sharp and flat key areas. Carlos Salzedo's well-known rewrite of Wagner's "Magic Fire Music" from Die Walküre is the classic example of this — harpists play it using different string spellings than written in order to navigate the pedal challenges. Strauss's Salome ("Dance of the Seven Veils") is another case where this kind of rewriting has been used.

All of these solutions might be useful to implement in conjunction with a harpist. However, it's still helpful to be aware of potential challenges and solutions during the composition process.

Two Considerations about Using Enharmonics

 

1. Enharmonics Usually Mean More Pedal Changes

Generally, the use of enharmonics will result in additional pedal changes, often requiring shifts from flat to natural. This is not always an issue, but something to keep in mind. For instance, if you were to double G#/A♭ and then A#/B♭, the A pedal would require a quick shift from flat to natural. Again, this is commonplace, but can be audible in sparse textures and simply adds in an additional layer of complexity that could be difficult at faster tempos.

Weigh the cost of the added pedal changes against your intended sound with the enharmonics. It might very well be worth it!

2. Flats vs. Sharps

Due to the harp's mechanics, flats sound more resonant than sharps. For instance, the key of E♭ major is more resonant than E major. So, composers often wonder if they should rewrite sections enharmonically to utilize flats more than sharps. This strategy is worth considering, with a few caveats. First, the timbral difference is more apparent in solo/small chamber writing versus large ensemble. It could also pose rehearsal confusion if the harp part is notated in a different key. Second, think about potential chromaticism and whether you would be more likely to move into additional sharp or flat areas. While C♭ major is the most resonant key, it would limit your chromatic mobility without using excessive enharmonic respellings. 

So yes, flat keys are preferred on the harp, but keep these practical considerations in mind. 

Final Thoughts

Enharmonics can seem superfluous on other instruments (like the piano), but are one of the "superpowers" of the double-action pedal harp. If you are aware of which notes have enharmonic equivalents, you can use them for both practical solutions and special effects. What are your favorite ways to utilize enharmonics on the harp?

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