What are theoretical keys?
Q: What are theoretical keys?
A: Theoretical keys are musical keys with key signatures that contain at least one double-flat or double-sharp.
Q: Why are double-flats and double-sharps rarely placed in the key signature?
A: Double-flats and double-sharps are used as accidentals, but they are rarely placed in the key signature because it would make reading the key signature very difficult.
Q: What is an example of a theoretical key?
A: An example of a theoretical key is G♯ major, which has a key signature with an F.
Q: How can we write music using this theoretical key?
A: We can write music using this theoretical key by writing it with the same notes as A♭ major, since these two keys are enharmonically equivalent.
Q: What does enharmonically equivalent mean?
A: Enharmonically equivalent means that two different musical keys have exactly the same notes.
Q: Why do we use equal temperament when writing music down? A: We use equal temperament when writing music down so that all notes sound equally in tune regardless of their position on the scale.
