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- Theoretical_key abstract "In music theory, a theoretical key or impossible key is a key and scale which exists in theory and practice, but whose corresponding key signature make its notation impractical. Such a key is one whose key signature would contain one or more double-flats or double-sharps.Double-flats and double-sharps are used in music as accidentals, but they are never placed in the key signature (in music that uses equal temperament), due to notational convention and because reading the music would become unnecessarily difficult.For example, the key of D♭ minor is not conventionally used in notated music, because its corresponding key signature would contain a Bdouble flat (submediant). An equal-tempered scale of D♭ minor comprises the same notes as the C♯ minor scale. Under equal temperament the scales sound exactly the same; such key pairs are said to be enharmonically equivalent. So the theoretical key of D♭ minor is usually practically notated by a key signature of C♯ minor.The other option is to use either no key signature or one with single-flats and to provide accidentals as needed for the Bdouble flats.".
- Theoretical_key thumbnail Db_minor_key_signature.png?width=300.
- Theoretical_key wikiPageID "6432514".
- Theoretical_key wikiPageRevisionID "589254414".
- Theoretical_key hasPhotoCollection Theoretical_key.
- Theoretical_key subject Category:Musical_notation.
- Theoretical_key comment "In music theory, a theoretical key or impossible key is a key and scale which exists in theory and practice, but whose corresponding key signature make its notation impractical.".
- Theoretical_key label "Theoretical key".
- Theoretical_key sameAs m.0g547_.
- Theoretical_key sameAs Q7782366.
- Theoretical_key sameAs Q7782366.
- Theoretical_key wasDerivedFrom Theoretical_key?oldid=589254414.
- Theoretical_key depiction Db_minor_key_signature.png.
- Theoretical_key isPrimaryTopicOf Theoretical_key.
