Section 17.5 Writing Secondary Dominants
To write a secondary dominant, use the following procedure.
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First determine the note that is the root of the chord being tonicized (the chord to the right of the slash).
- Determine the root of the \(\left.\text{V}^{7}\right.\) in the key of B♭ (the Roman numeral after the slash): F
- Build a major–minor seventh chord on F: F–A–C–E♭
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Invert the chord accordingly. \(\left.\text{}^{4}_{3}\right.\) inversion means the fifth of the chord is in the bass.