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Old 12-27-2018, 11:32 AM
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rick-slo rick-slo is offline
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Quote:
Originally Posted by charles Tauber View Post
The short answer is that most (Western culture) music has an identifiable key Center that is given by a key signature. Music often changes keys within a single piece. In some cases the key signature is changed mid piece while in other cases the key change is temporary and achieved through accidentals (sharps, flats and naturals).

A D# is found in the key of E, suggesting a temporary key change to E. E major is the “dominant” (fifth) of A, one of the most common of chord/harmonic progressions. The D# is found in a B major chord, the “dominant” of E, which is the dominant of A: B major is the fifth of the fifth of A. As others have said, that’s likely what the study you are working on is doing: it is a very common harmonic progression.
I would not consider each time an accidental note occurs being a key change. That would be quite confusing. The tonic, dominate chords etc. do not change.
It's just a note that is not in the key signature, often a chromatic note occurring in the melody line. Also in many cases there is no key signature that exists
that would fit accidental notes, for example in Carcassi piece there is no key
signature specified for A-B-C-D#-E-F-G# or for that matter A-B-C-D-E-F-G#.
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Last edited by rick-slo; 12-27-2018 at 05:05 PM.
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