Unit 5, Lesson 3 of 3
Brainlag Plus Music

The supertonic 7th

Music theory, Seventh chords, 10 minutes

II7 and IIb7: what they are, their figures, and why IIb7 leads so well into V.

II7, mostly as IIb7

Add a 7th to chord II and you get II7: in C major, D, F, A and C. It is used almost always in first inversion, IIb7 (figures 6 over 5), just before V at a cadence.

Why it works: it has the subdominant in the bass, rising a step to the dominant, like IIb; and its 7th (the tonic) falls a step to the leading note of V.

IIb7, V, I: the 7th of IIb7 (tenor) falls to the leading note, which then rises to the tonic

Grade 6 asks you to recognise II7 in root position and first inversion, and to know their figures: 7 and 6 over 5.

The rest of this lesson and its 4 practice questions are in Plus Music.

Screen 1 of 2, free to read.

  • 4 exam-style questions, marked as you go, each with a worked solution
  • Anything you get wrong is saved to your flashcards