Lesson 5

 Secondary Dominants

  • Secondary Dominants are the chords that act like dominants when they are spelt and resolved. 
  • They must resolve to a scale degree and harmony other than the tonic.
  • Dominants are also called "applied dominant" because they are connected to a chord other than the tonic.
  • To spell a V7/V chord in a key you must picture the dominant harmony as the tonic, then build the dominant 7 on the correct scale degree and lastly you must make sure the dominant 7 has all the correct accidentals to make it a dominant 7 chord.
  • An example of a V7/V chord in C# is D#-F*-A#-C#
This image shows the V7/V and how it can be used in a piece of music. Reference: Secondary Dominants David Kulma

This image shows different secondary dominants in the Key of Eb. Reference: Music Theory for the 21st century classroom, Secondary Dominants in Major and Minor.
This video explains the rules of engagement and demonstrates how to use a secondary dominant within a phrase.
In this video, they explore all the usable secondary dominants that can be used in writing music.


Me playing a I-IV-V7/V-1 progression showing the secondary dominant example.





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