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Section 17.5 Writing Secondary Dominants

To write a secondary dominant, use the following procedure.

  1. First determine the note that is the root of the chord being tonicized (the chord to the right of the slash).

  2. Determine the root of the \(\left.\text{V}^{7}\right.\) in the key of B♭ (the Roman numeral after the slash): F

  3. Build a major–minor seventh chord on F: F–A–C–E

  4. Invert the chord accordingly. \(\left.\text{}^{4}_{3}\right.\) inversion means the fifth of the chord is in the bass.