What is the musical definition of key?
What is the musical definition of key? key, in music, a system of functionally related chords deriving from the major and minor scales, with a central note, called the tonic (or keynote). The central chord is the tonic triad, which is built on the tonic note. Any of the 12 tones of the chromatic scale can serve as the tonic of a key. What is a theoretical key in music? In music theory, a theoretical key is a key whose key signature would have at least one double-flat ( ) or double-sharp ( ). Double-flats and double-sharps are often used...