Theory

Posted on 7:22 PM by Awtrey Orchestra

How to determine the key of a piece:

  1. Look at the first and last notes......this is not a definite indicator but usually the piece begins and ends with the name of the key
  2. If the piece is in minor you will see the leading tone show up a lot......the leading tone is the 7th scale degree and is a half step away from the tonic (1st scale degree).....it is an accidental if the piece is in minor
  3. Look for the raised 6th scale degree (it will also be an accidental)
  4. If you do not see anything from numbers two and three, it is probably in a major key signature.
Remember that every key signature has a relative minor----this means they share the same key signature.
C major=A minor (no sharps or flats)
G major=E minor (1#)
D major=B minor (2#)
A major=C# minor (3#)
F major=D minor (1 flat)
B-flat major=G minor (2 flats)

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