What does enharmonically mean?
Enharmonically is an adverb used almost entirely within music theory to describe the relationship between notes that sound exactly the same but are written with different names — for example, G-sharp and A-flat, which occupy the same key on a piano. When a composer spells or notates a chord enharmonically, they choose one of these equivalent spellings over another, often to clarify harmonic function or smooth the movement between keys. The term also applies to modulation: a piece may pivot enharmonically from one key to another by reinterpreting a shared pitch under a new name. Beyond modern equal-tempered tuning, the word reaches back to the enharmonic genus of ancient Greek music, which used intervals finer than a semitone. Precise and technical rather than conversational, it signals careful attention to how identical sounds can carry different musical meanings depending on their written identity.
adverbIn a manner relating to notes that are identical in pitch but written (or named) differently in musical notation, such as G-sharp and A-flat. More broadly, in music theory, according to the principle that such differently spelled notes are equivalent in sound.
- With reference to two notes or keys of identical pitch but different notation or naming (e.g., F-sharp and G-flat): equivalently in pitch though differently spelled.
- In relation to the ancient Greek enharmonic genus, one of the three divisions of the tetrachord characterized by microtonal intervals.
"The composer spelled the chord enharmonically, notating the leading tone as a flattened sixth to smooth the voice leading."
"Because the piano has only twelve pitches per octave, the sharp and flat spellings are enharmonically identical."
"The passage modulates enharmonically, pivoting on a single note that is reinterpreted as belonging to a new key."
On a piano keyboard, C-sharp and D-flat are literally the same key — and "enharmonically" is the word musicians use for that hidden identity between two names.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of enharmonically
Enharmonically derives from the adjective "enharmonic," which English adopted in the late 16th century from Latin "enharmonicus" and ultimately Greek "enarmonios" (en- 'in' + harmonia 'harmony'). The Greek term originally referred to the enharmonic genus, one of the ancient tetrachord divisions using very small intervals. As Western tuning shifted toward equal temperament, the word's sense narrowed to describe notes of equal pitch with different spellings, and the adverb followed this development. Its cognates include "harmony," "harmonic," and "harmonious," all descending from the same Greek root.
Related word forms
How enharmonically is actually used
A technical term used almost exclusively in music theory, composition, and musicology. It carries no figurative or informal use, so it may strike general readers as jargon outside musical contexts. The spelling with initial 'e-' (from Greek en-, 'in') should not be altered to 'an-'.
Easily confused with enharmonically
"Anharmonic" describes oscillations or motion that are not simple harmonic (as in physics), whereas "enharmonic" refers to notes of identical pitch with different spellings in music.