In modern music and notation, an enharmonic equivalent's a note (enharmonic tone), interval (enharmonic interval), or key signature which's equivalent to some other note, interval, or key signature, but "spelled", or named, differently. Thus, the enharmonic spelling of a written note, interval or chord's an enharmonic equivalent to the way that note, interval or chord would be written under the current key signature. In other words, if two notes have the same pitch but are represented by differe… (More on Enharmonic)